diff --git a/poky/bitbake/lib/bb/COW.py b/poky/bitbake/lib/bb/COW.py
index bec6208..7817473 100644
--- a/poky/bitbake/lib/bb/COW.py
+++ b/poky/bitbake/lib/bb/COW.py
@@ -150,7 +150,7 @@
                 yield value
             if type == "items":
                 yield (key, value)
-        raise StopIteration()
+        return
 
     def iterkeys(cls):
         return cls.iter("keys")
diff --git a/poky/bitbake/lib/bb/__init__.py b/poky/bitbake/lib/bb/__init__.py
index d24adb8..4bc47c8 100644
--- a/poky/bitbake/lib/bb/__init__.py
+++ b/poky/bitbake/lib/bb/__init__.py
@@ -21,7 +21,7 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-__version__ = "1.38.0"
+__version__ = "1.40.0"
 
 import sys
 if sys.version_info < (3, 4, 0):
@@ -63,6 +63,10 @@
     def verbose(self, msg, *args, **kwargs):
         return self.log(logging.INFO - 1, msg, *args, **kwargs)
 
+    def verbnote(self, msg, *args, **kwargs):
+        return self.log(logging.INFO + 2, msg, *args, **kwargs)
+
+
 logging.raiseExceptions = False
 logging.setLoggerClass(BBLogger)
 
@@ -93,6 +97,18 @@
 def note(*args):
     mainlogger.info(''.join(args))
 
+#
+# A higher prioity note which will show on the console but isn't a warning
+#
+# Something is happening the user should be aware of but they probably did
+# something to make it happen
+#
+def verbnote(*args):
+    mainlogger.verbnote(''.join(args))
+
+#
+# Warnings - things the user likely needs to pay attention to and fix
+#
 def warn(*args):
     mainlogger.warning(''.join(args))
 
diff --git a/poky/bitbake/lib/bb/build.py b/poky/bitbake/lib/bb/build.py
index 4631abd..3e2a94e 100644
--- a/poky/bitbake/lib/bb/build.py
+++ b/poky/bitbake/lib/bb/build.py
@@ -41,8 +41,6 @@
 bblogger = logging.getLogger('BitBake')
 logger = logging.getLogger('BitBake.Build')
 
-NULL = open(os.devnull, 'r+')
-
 __mtime_cache = {}
 
 def cached_mtime_noerror(f):
@@ -533,7 +531,6 @@
                 self.triggered = True
 
     # Handle logfiles
-    si = open('/dev/null', 'r')
     try:
         bb.utils.mkdirhier(os.path.dirname(logfn))
         logfile = open(logfn, 'w')
@@ -547,7 +544,8 @@
     ose = [os.dup(sys.stderr.fileno()), sys.stderr.fileno()]
 
     # Replace those fds with our own
-    os.dup2(si.fileno(), osi[1])
+    with open('/dev/null', 'r') as si:
+        os.dup2(si.fileno(), osi[1])
     os.dup2(logfile.fileno(), oso[1])
     os.dup2(logfile.fileno(), ose[1])
 
@@ -608,7 +606,6 @@
         os.close(osi[0])
         os.close(oso[0])
         os.close(ose[0])
-        si.close()
 
         logfile.close()
         if os.path.exists(logfn) and os.path.getsize(logfn) == 0:
@@ -803,6 +800,7 @@
             if name in flags:
                 deptask = d.expand(flags[name])
                 task_deps[name][task] = deptask
+        getTask('mcdepends')
         getTask('depends')
         getTask('rdepends')
         getTask('deptask')
diff --git a/poky/bitbake/lib/bb/cache.py b/poky/bitbake/lib/bb/cache.py
index 168a77a..258d679 100644
--- a/poky/bitbake/lib/bb/cache.py
+++ b/poky/bitbake/lib/bb/cache.py
@@ -37,7 +37,7 @@
 
 logger = logging.getLogger("BitBake.Cache")
 
-__cache_version__ = "151"
+__cache_version__ = "152"
 
 def getCacheFile(path, filename, data_hash):
     return os.path.join(path, filename + "." + data_hash)
diff --git a/poky/bitbake/lib/bb/codeparser.py b/poky/bitbake/lib/bb/codeparser.py
index 530f44e..ddd1b97 100644
--- a/poky/bitbake/lib/bb/codeparser.py
+++ b/poky/bitbake/lib/bb/codeparser.py
@@ -140,7 +140,7 @@
     # so that an existing cache gets invalidated. Additionally you'll need
     # to increment __cache_version__ in cache.py in order to ensure that old
     # recipe caches don't trigger "Taskhash mismatch" errors.
-    CACHE_VERSION = 9
+    CACHE_VERSION = 10
 
     def __init__(self):
         MultiProcessCache.__init__(self)
@@ -214,7 +214,7 @@
         self.buffer = []
 
 class PythonParser():
-    getvars = (".getVar", ".appendVar", ".prependVar")
+    getvars = (".getVar", ".appendVar", ".prependVar", "oe.utils.conditional")
     getvarflags = (".getVarFlag", ".appendVarFlag", ".prependVarFlag")
     containsfuncs = ("bb.utils.contains", "base_contains")
     containsanyfuncs = ("bb.utils.contains_any",  "bb.utils.filter")
diff --git a/poky/bitbake/lib/bb/cooker.py b/poky/bitbake/lib/bb/cooker.py
index 1fda40d..16681ba 100644
--- a/poky/bitbake/lib/bb/cooker.py
+++ b/poky/bitbake/lib/bb/cooker.py
@@ -620,6 +620,27 @@
             runlist.append([mc, k, ktask, fn])
             bb.event.fire(bb.event.TreeDataPreparationProgress(current, len(fulltargetlist)), self.data)
 
+        mcdeps = taskdata[mc].get_mcdepends()
+        # No need to do check providers if there are no mcdeps or not an mc build
+        if mcdeps and mc:
+            # Make sure we can provide the multiconfig dependency
+            seen = set()
+            new = True
+            while new:
+                new = False
+                for mc in self.multiconfigs:
+                    for k in mcdeps:
+                        if k in seen:
+                            continue
+                        l = k.split(':')
+                        depmc = l[2]
+                        if depmc not in self.multiconfigs:
+                            bb.fatal("Multiconfig dependency %s depends on nonexistent mc configuration %s" % (k,depmc))
+                        else:
+                            logger.debug(1, "Adding providers for multiconfig dependency %s" % l[3])
+                            taskdata[depmc].add_provider(localdata[depmc], self.recipecaches[depmc], l[3])
+                            seen.add(k)
+                            new = True
         for mc in self.multiconfigs:
             taskdata[mc].add_unresolved(localdata[mc], self.recipecaches[mc])
 
@@ -706,8 +727,8 @@
             if not dotname in depend_tree["tdepends"]:
                 depend_tree["tdepends"][dotname] = []
             for dep in rq.rqdata.runtaskentries[tid].depends:
-                (depmc, depfn, deptaskname, deptaskfn) = bb.runqueue.split_tid_mcfn(dep)
-                deppn = self.recipecaches[mc].pkg_fn[deptaskfn]
+                (depmc, depfn, _, deptaskfn) = bb.runqueue.split_tid_mcfn(dep)
+                deppn = self.recipecaches[depmc].pkg_fn[deptaskfn]
                 depend_tree["tdepends"][dotname].append("%s.%s" % (deppn, bb.runqueue.taskname_from_tid(dep)))
             if taskfn not in seen_fns:
                 seen_fns.append(taskfn)
@@ -1566,7 +1587,7 @@
                     pkgs_to_build.append(t)
 
         if 'universe' in pkgs_to_build:
-            parselog.warning("The \"universe\" target is only intended for testing and may produce errors.")
+            parselog.verbnote("The \"universe\" target is only intended for testing and may produce errors.")
             parselog.debug(1, "collating packages for \"universe\"")
             pkgs_to_build.remove('universe')
             for mc in self.multiconfigs:
@@ -1633,7 +1654,10 @@
 class CookerCollectFiles(object):
     def __init__(self, priorities):
         self.bbappends = []
-        self.bbfile_config_priorities = priorities
+        # Priorities is a list of tupples, with the second element as the pattern.
+        # We need to sort the list with the longest pattern first, and so on to
+        # the shortest.  This allows nested layers to be properly evaluated.
+        self.bbfile_config_priorities = sorted(priorities, key=lambda tup: tup[1], reverse=True)
 
     def calc_bbfile_priority( self, filename, matched = None ):
         for _, _, regex, pri in self.bbfile_config_priorities:
diff --git a/poky/bitbake/lib/bb/daemonize.py b/poky/bitbake/lib/bb/daemonize.py
index 8300d1d..c937675 100644
--- a/poky/bitbake/lib/bb/daemonize.py
+++ b/poky/bitbake/lib/bb/daemonize.py
@@ -16,6 +16,10 @@
     background as a daemon, returning control to the caller.
     """
 
+    # Ensure stdout/stderror are flushed before forking to avoid duplicate output
+    sys.stdout.flush()
+    sys.stderr.flush()
+
     try:
         # Fork a child process so the parent can exit.  This returns control to
         # the command-line or shell.  It also guarantees that the child will not
@@ -49,8 +53,8 @@
             # exit() or _exit()?
             # _exit is like exit(), but it doesn't call any functions registered
             # with atexit (and on_exit) or any registered signal handlers.  It also
-            # closes any open file descriptors.  Using exit() may cause all stdio
-            # streams to be flushed twice and any temporary files may be unexpectedly
+            # closes any open file descriptors, but doesn't flush any buffered output.
+            # Using exit() may cause all any temporary files to be unexpectedly
             # removed.  It's therefore recommended that child branches of a fork()
             # and the parent branch(es) of a daemon use _exit().
             os._exit(0)
@@ -61,17 +65,19 @@
     # The second child.
 
     # Replace standard fds with our own
-    si = open('/dev/null', 'r')
-    os.dup2(si.fileno(), sys.stdin.fileno())
+    with open('/dev/null', 'r') as si:
+        os.dup2(si.fileno(), sys.stdin.fileno())
 
     try:
         so = open(logfile, 'a+')
-        se = so
         os.dup2(so.fileno(), sys.stdout.fileno())
-        os.dup2(se.fileno(), sys.stderr.fileno())
+        os.dup2(so.fileno(), sys.stderr.fileno())
     except io.UnsupportedOperation:
         sys.stdout = open(logfile, 'a+')
-        sys.stderr = sys.stdout
+
+    # Have stdout and stderr be the same so log output matches chronologically
+    # and there aren't two seperate buffers
+    sys.stderr = sys.stdout
 
     try:
         function()
@@ -79,4 +85,9 @@
         traceback.print_exc()
     finally:
         bb.event.print_ui_queue()
+        # os._exit() doesn't flush open files like os.exit() does. Manually flush
+        # stdout and stderr so that any logging output will be seen, particularly
+        # exception tracebacks.
+        sys.stdout.flush()
+        sys.stderr.flush()
         os._exit(0)
diff --git a/poky/bitbake/lib/bb/data.py b/poky/bitbake/lib/bb/data.py
index 80a7879..d66d98c 100644
--- a/poky/bitbake/lib/bb/data.py
+++ b/poky/bitbake/lib/bb/data.py
@@ -38,6 +38,7 @@
 # Based on functions from the base bb module, Copyright 2003 Holger Schurig
 
 import sys, os, re
+import hashlib
 if sys.argv[0][-5:] == "pydoc":
     path = os.path.dirname(os.path.dirname(sys.argv[1]))
 else:
@@ -283,14 +284,12 @@
     try:
         if key[-1] == ']':
             vf = key[:-1].split('[')
-            value = d.getVarFlag(vf[0], vf[1], False)
-            parser = d.expandWithRefs(value, key)
+            value, parser = d.getVarFlag(vf[0], vf[1], False, retparser=True)
             deps |= parser.references
             deps = deps | (keys & parser.execs)
             return deps, value
         varflags = d.getVarFlags(key, ["vardeps", "vardepvalue", "vardepsexclude", "exports", "postfuncs", "prefuncs", "lineno", "filename"]) or {}
         vardeps = varflags.get("vardeps")
-        value = d.getVarFlag(key, "_content", False)
 
         def handle_contains(value, contains, d):
             newvalue = ""
@@ -309,10 +308,19 @@
                 return newvalue
             return value + newvalue
 
+        def handle_remove(value, deps, removes, d):
+            for r in sorted(removes):
+                r2 = d.expandWithRefs(r, None)
+                value += "\n_remove of %s" % r
+                deps |= r2.references
+                deps = deps | (keys & r2.execs)
+            return value
+
         if "vardepvalue" in varflags:
-           value = varflags.get("vardepvalue")
+            value = varflags.get("vardepvalue")
         elif varflags.get("func"):
             if varflags.get("python"):
+                value = d.getVarFlag(key, "_content", False)
                 parser = bb.codeparser.PythonParser(key, logger)
                 if value and "\t" in value:
                     logger.warning("Variable %s contains tabs, please remove these (%s)" % (key, d.getVar("FILE")))
@@ -321,13 +329,15 @@
                 deps = deps | (keys & parser.execs)
                 value = handle_contains(value, parser.contains, d)
             else:
-                parsedvar = d.expandWithRefs(value, key)
+                value, parsedvar = d.getVarFlag(key, "_content", False, retparser=True)
                 parser = bb.codeparser.ShellParser(key, logger)
                 parser.parse_shell(parsedvar.value)
                 deps = deps | shelldeps
                 deps = deps | parsedvar.references
                 deps = deps | (keys & parser.execs) | (keys & parsedvar.execs)
                 value = handle_contains(value, parsedvar.contains, d)
+                if hasattr(parsedvar, "removes"):
+                    value = handle_remove(value, deps, parsedvar.removes, d)
             if vardeps is None:
                 parser.log.flush()
             if "prefuncs" in varflags:
@@ -337,10 +347,12 @@
             if "exports" in varflags:
                 deps = deps | set(varflags["exports"].split())
         else:
-            parser = d.expandWithRefs(value, key)
+            value, parser = d.getVarFlag(key, "_content", False, retparser=True)
             deps |= parser.references
             deps = deps | (keys & parser.execs)
             value = handle_contains(value, parser.contains, d)
+            if hasattr(parser, "removes"):
+                value = handle_remove(value, deps, parser.removes, d)
 
         if "vardepvalueexclude" in varflags:
             exclude = varflags.get("vardepvalueexclude")
@@ -394,6 +406,43 @@
         #print "For %s: %s" % (task, str(deps[task]))
     return tasklist, deps, values
 
+def generate_dependency_hash(tasklist, gendeps, lookupcache, whitelist, fn):
+    taskdeps = {}
+    basehash = {}
+
+    for task in tasklist:
+        data = lookupcache[task]
+
+        if data is None:
+            bb.error("Task %s from %s seems to be empty?!" % (task, fn))
+            data = ''
+
+        gendeps[task] -= whitelist
+        newdeps = gendeps[task]
+        seen = set()
+        while newdeps:
+            nextdeps = newdeps
+            seen |= nextdeps
+            newdeps = set()
+            for dep in nextdeps:
+                if dep in whitelist:
+                    continue
+                gendeps[dep] -= whitelist
+                newdeps |= gendeps[dep]
+            newdeps -= seen
+
+        alldeps = sorted(seen)
+        for dep in alldeps:
+            data = data + dep
+            var = lookupcache[dep]
+            if var is not None:
+                data = data + str(var)
+        k = fn + "." + task
+        basehash[k] = hashlib.md5(data.encode("utf-8")).hexdigest()
+        taskdeps[task] = alldeps
+
+    return taskdeps, basehash
+
 def inherits_class(klass, d):
     val = d.getVar('__inherit_cache', False) or []
     needle = os.path.join('classes', '%s.bbclass' % klass)
diff --git a/poky/bitbake/lib/bb/data_smart.py b/poky/bitbake/lib/bb/data_smart.py
index 7b09af5..6b94fc4 100644
--- a/poky/bitbake/lib/bb/data_smart.py
+++ b/poky/bitbake/lib/bb/data_smart.py
@@ -42,6 +42,7 @@
 __setvar_regexp__ = re.compile('(?P<base>.*?)(?P<keyword>_append|_prepend|_remove)(_(?P<add>[^A-Z]*))?$')
 __expand_var_regexp__ = re.compile(r"\${[^{}@\n\t :]+}")
 __expand_python_regexp__ = re.compile(r"\${@.+?}")
+__whitespace_split__ = re.compile('(\s)')
 
 def infer_caller_details(loginfo, parent = False, varval = True):
     """Save the caller the trouble of specifying everything."""
@@ -104,11 +105,7 @@
             if self.varname and key:
                 if self.varname == key:
                     raise Exception("variable %s references itself!" % self.varname)
-            if key in self.d.expand_cache:
-                varparse = self.d.expand_cache[key]
-                var = varparse.value
-            else:
-                var = self.d.getVarFlag(key, "_content")
+            var = self.d.getVarFlag(key, "_content")
             self.references.add(key)
             if var is not None:
                 return var
@@ -267,6 +264,16 @@
             return
         self.variables[var].append(loginfo.copy())
 
+    def rename_variable_hist(self, oldvar, newvar):
+        if not self.dataroot._tracking:
+            return
+        if oldvar not in self.variables:
+            return
+        if newvar not in self.variables:
+            self.variables[newvar] = []
+        for i in self.variables[oldvar]:
+            self.variables[newvar].append(i.copy())
+
     def variable(self, var):
         remote_connector = self.dataroot.getVar('_remote_data', False)
         if remote_connector:
@@ -401,9 +408,6 @@
         if not isinstance(s, str): # sanity check
             return VariableParse(varname, self, s)
 
-        if varname and varname in self.expand_cache:
-            return self.expand_cache[varname]
-
         varparse = VariableParse(varname, self)
 
         while s.find('${') != -1:
@@ -427,9 +431,6 @@
 
         varparse.value = s
 
-        if varname:
-            self.expand_cache[varname] = varparse
-
         return varparse
 
     def expand(self, s, varname = None):
@@ -498,6 +499,7 @@
 
     def setVar(self, var, value, **loginfo):
         #print("var=" + str(var) + "  val=" + str(value))
+        self.expand_cache = {}
         parsing=False
         if 'parsing' in loginfo:
             parsing=True
@@ -510,7 +512,7 @@
 
         if 'op' not in loginfo:
             loginfo['op'] = "set"
-        self.expand_cache = {}
+
         match  = __setvar_regexp__.match(var)
         if match and match.group("keyword") in __setvar_keyword__:
             base = match.group('base')
@@ -619,6 +621,7 @@
 
         val = self.getVar(key, 0, parsing=True)
         if val is not None:
+            self.varhistory.rename_variable_hist(key, newkey)
             loginfo['variable'] = newkey
             loginfo['op'] = 'rename from %s' % key
             loginfo['detail'] = val
@@ -660,6 +663,7 @@
         self.setVar(var + "_prepend", value, ignore=True, parsing=True)
 
     def delVar(self, var, **loginfo):
+        self.expand_cache = {}
         if '_remote_data' in self.dict:
             connector = self.dict["_remote_data"]["_content"]
             res = connector.delVar(var)
@@ -669,7 +673,6 @@
         loginfo['detail'] = ""
         loginfo['op'] = 'del'
         self.varhistory.record(**loginfo)
-        self.expand_cache = {}
         self.dict[var] = {}
         if var in self.overridedata:
             del self.overridedata[var]
@@ -692,13 +695,13 @@
                          override = None
 
     def setVarFlag(self, var, flag, value, **loginfo):
+        self.expand_cache = {}
         if '_remote_data' in self.dict:
             connector = self.dict["_remote_data"]["_content"]
             res = connector.setVarFlag(var, flag, value)
             if not res:
                 return
 
-        self.expand_cache = {}
         if 'op' not in loginfo:
             loginfo['op'] = "set"
         loginfo['flag'] = flag
@@ -719,9 +722,21 @@
                 self.dict["__exportlist"]["_content"] = set()
             self.dict["__exportlist"]["_content"].add(var)
 
-    def getVarFlag(self, var, flag, expand=True, noweakdefault=False, parsing=False):
+    def getVarFlag(self, var, flag, expand=True, noweakdefault=False, parsing=False, retparser=False):
+        if flag == "_content":
+            cachename = var
+        else:
+            if not flag:
+                bb.warn("Calling getVarFlag with flag unset is invalid")
+                return None
+            cachename = var + "[" + flag + "]"
+
+        if expand and cachename in self.expand_cache:
+            return self.expand_cache[cachename].value
+
         local_var, overridedata = self._findVar(var)
         value = None
+        removes = set()
         if flag == "_content" and overridedata is not None and not parsing:
             match = False
             active = {}
@@ -748,7 +763,11 @@
                             match = active[a]
                             del active[a]
             if match:
-                value = self.getVar(match, False)
+                value, subparser = self.getVarFlag(match, "_content", False, retparser=True)
+                if hasattr(subparser, "removes"):
+                    # We have to carry the removes from the overridden variable to apply at the
+                    # end of processing
+                    removes = subparser.removes
 
         if local_var is not None and value is None:
             if flag in local_var:
@@ -784,17 +803,13 @@
                 if match:
                     value = r + value
 
-        if expand and value:
-            # Only getvar (flag == _content) hits the expand cache
-            cachename = None
-            if flag == "_content":
-                cachename = var
-            else:
-                cachename = var + "[" + flag + "]"
-            value = self.expand(value, cachename)
+        parser = None
+        if expand or retparser:
+            parser = self.expandWithRefs(value, cachename)
+        if expand:
+            value = parser.value
 
-        if value and flag == "_content" and local_var is not None and "_remove" in local_var:
-            removes = []
+        if value and flag == "_content" and local_var is not None and "_remove" in local_var and not parsing:
             self.need_overrides()
             for (r, o) in local_var["_remove"]:
                 match = True
@@ -803,26 +818,45 @@
                         if not o2 in self.overrides:
                             match = False                            
                 if match:
-                    removes.extend(self.expand(r).split())
+                    removes.add(r)
 
-            if removes:
-                filtered = filter(lambda v: v not in removes,
-                                  value.split())
-                value = " ".join(filtered)
-                if expand and var in self.expand_cache:
-                    # We need to ensure the expand cache has the correct value
-                    # flag == "_content" here
-                    self.expand_cache[var].value = value
+        if value and flag == "_content" and not parsing:
+            if removes and parser:
+                expanded_removes = {}
+                for r in removes:
+                    expanded_removes[r] = self.expand(r).split()
+
+                parser.removes = set()
+                val = ""
+                for v in __whitespace_split__.split(parser.value):
+                    skip = False
+                    for r in removes:
+                        if v in expanded_removes[r]:
+                            parser.removes.add(r)
+                            skip = True
+                    if skip:
+                        continue
+                    val = val + v
+                parser.value = val
+                if expand:
+                    value = parser.value
+
+        if parser:
+            self.expand_cache[cachename] = parser
+
+        if retparser:
+            return value, parser
+
         return value
 
     def delVarFlag(self, var, flag, **loginfo):
+        self.expand_cache = {}
         if '_remote_data' in self.dict:
             connector = self.dict["_remote_data"]["_content"]
             res = connector.delVarFlag(var, flag)
             if not res:
                 return
 
-        self.expand_cache = {}
         local_var, _ = self._findVar(var)
         if not local_var:
             return
diff --git a/poky/bitbake/lib/bb/event.py b/poky/bitbake/lib/bb/event.py
index 5d00496..5b1b094 100644
--- a/poky/bitbake/lib/bb/event.py
+++ b/poky/bitbake/lib/bb/event.py
@@ -141,6 +141,9 @@
     logger = logging.getLogger("BitBake")
     if not _uiready:
         from bb.msg import BBLogFormatter
+        # Flush any existing buffered content
+        sys.stdout.flush()
+        sys.stderr.flush()
         stdout = logging.StreamHandler(sys.stdout)
         stderr = logging.StreamHandler(sys.stderr)
         formatter = BBLogFormatter("%(levelname)s: %(message)s")
@@ -395,7 +398,7 @@
         Event.__init__(self)
 
 class RecipePreFinalise(RecipeEvent):
-    """ Recipe Parsing Complete but not yet finialised"""
+    """ Recipe Parsing Complete but not yet finalised"""
 
 class RecipeTaskPreProcess(RecipeEvent):
     """
diff --git a/poky/bitbake/lib/bb/fetch2/__init__.py b/poky/bitbake/lib/bb/fetch2/__init__.py
index 72d6092..3b8389e 100644
--- a/poky/bitbake/lib/bb/fetch2/__init__.py
+++ b/poky/bitbake/lib/bb/fetch2/__init__.py
@@ -256,7 +256,7 @@
 
         # Identify if the URI is relative or not
         if urlp.scheme in self._relative_schemes and \
-           re.compile("^\w+:(?!//)").match(uri):
+           re.compile(r"^\w+:(?!//)").match(uri):
             self.relative = True
 
         if not self.relative:
@@ -383,7 +383,7 @@
         path = location
     else:
         host = location
-        path = ""
+        path = "/"
     if user:
         m = re.compile('(?P<user>[^:]+)(:?(?P<pswd>.*))').match(user)
         if m:
@@ -452,8 +452,8 @@
             # Handle URL parameters
             if i:
                 # Any specified URL parameters must match
-                for k in uri_replace_decoded[loc]:
-                    if uri_decoded[loc][k] != uri_replace_decoded[loc][k]:
+                for k in uri_find_decoded[loc]:
+                    if uri_decoded[loc][k] != uri_find_decoded[loc][k]:
                         return None
             # Overwrite any specified replacement parameters
             for k in uri_replace_decoded[loc]:
@@ -827,6 +827,7 @@
                   'NO_PROXY', 'no_proxy',
                   'ALL_PROXY', 'all_proxy',
                   'GIT_PROXY_COMMAND',
+                  'GIT_SSH',
                   'GIT_SSL_CAINFO',
                   'GIT_SMART_HTTP',
                   'SSH_AUTH_SOCK', 'SSH_AGENT_PID',
@@ -837,14 +838,16 @@
     if not cleanup:
         cleanup = []
 
-    # If PATH contains WORKDIR which contains PV which contains SRCPV we
+    # If PATH contains WORKDIR which contains PV-PR which contains SRCPV we
     # can end up in circular recursion here so give the option of breaking it
     # in a data store copy.
     try:
         d.getVar("PV")
+        d.getVar("PR")
     except bb.data_smart.ExpansionError:
         d = bb.data.createCopy(d)
         d.setVar("PV", "fetcheravoidrecurse")
+        d.setVar("PR", "fetcheravoidrecurse")
 
     origenv = d.getVar("BB_ORIGENV", False)
     for var in exportvars:
@@ -1016,16 +1019,7 @@
                     origud.method.build_mirror_data(origud, ld)
             return origud.localpath
         # Otherwise the result is a local file:// and we symlink to it
-        if not os.path.exists(origud.localpath):
-            if os.path.islink(origud.localpath):
-                # Broken symbolic link
-                os.unlink(origud.localpath)
-
-            # As per above, in case two tasks end up here simultaneously.
-            try:
-                os.symlink(ud.localpath, origud.localpath)
-            except FileExistsError:
-                pass
+        ensure_symlink(ud.localpath, origud.localpath)
         update_stamp(origud, ld)
         return ud.localpath
 
@@ -1059,6 +1053,22 @@
             bb.utils.unlockfile(lf)
 
 
+def ensure_symlink(target, link_name):
+    if not os.path.exists(link_name):
+        if os.path.islink(link_name):
+            # Broken symbolic link
+            os.unlink(link_name)
+
+        # In case this is executing without any file locks held (as is
+        # the case for file:// URLs), two tasks may end up here at the
+        # same time, in which case we do not want the second task to
+        # fail when the link has already been created by the first task.
+        try:
+            os.symlink(target, link_name)
+        except FileExistsError:
+            pass
+
+
 def try_mirrors(fetch, d, origud, mirrors, check = False):
     """
     Try to use a mirrored version of the sources.
@@ -1088,7 +1098,9 @@
         return True
 
     pkgname = d.expand(d.getVar('PN', False))
-    trusted_hosts = d.getVarFlag('BB_ALLOWED_NETWORKS', pkgname, False)
+    trusted_hosts = None
+    if pkgname:
+        trusted_hosts = d.getVarFlag('BB_ALLOWED_NETWORKS', pkgname, False)
 
     if not trusted_hosts:
         trusted_hosts = d.getVar('BB_ALLOWED_NETWORKS')
diff --git a/poky/bitbake/lib/bb/fetch2/bzr.py b/poky/bitbake/lib/bb/fetch2/bzr.py
index 16123f8..658502f 100644
--- a/poky/bitbake/lib/bb/fetch2/bzr.py
+++ b/poky/bitbake/lib/bb/fetch2/bzr.py
@@ -41,8 +41,9 @@
         init bzr specific variable within url data
         """
         # Create paths to bzr checkouts
+        bzrdir = d.getVar("BZRDIR") or (d.getVar("DL_DIR") + "/bzr")
         relpath = self._strip_leading_slashes(ud.path)
-        ud.pkgdir = os.path.join(d.expand('${BZRDIR}'), ud.host, relpath)
+        ud.pkgdir = os.path.join(bzrdir, ud.host, relpath)
 
         ud.setup_revisions(d)
 
@@ -57,7 +58,7 @@
         command is "fetch", "update", "revno"
         """
 
-        basecmd = d.expand('${FETCHCMD_bzr}')
+        basecmd = d.getVar("FETCHCMD_bzr") or "/usr/bin/env bzr"
 
         proto =  ud.parm.get('protocol', 'http')
 
diff --git a/poky/bitbake/lib/bb/fetch2/cvs.py b/poky/bitbake/lib/bb/fetch2/cvs.py
index 490c954..0e0a319 100644
--- a/poky/bitbake/lib/bb/fetch2/cvs.py
+++ b/poky/bitbake/lib/bb/fetch2/cvs.py
@@ -110,7 +110,7 @@
         if ud.tag:
             options.append("-r %s" % ud.tag)
 
-        cvsbasecmd = d.getVar("FETCHCMD_cvs")
+        cvsbasecmd = d.getVar("FETCHCMD_cvs") or "/usr/bin/env cvs"
         cvscmd = cvsbasecmd + " '-d" + cvsroot + "' co " + " ".join(options) + " " + ud.module
         cvsupdatecmd = cvsbasecmd + " '-d" + cvsroot + "' update -d -P " + " ".join(options)
 
@@ -121,7 +121,8 @@
         # create module directory
         logger.debug(2, "Fetch: checking for module directory")
         pkg = d.getVar('PN')
-        pkgdir = os.path.join(d.getVar('CVSDIR'), pkg)
+        cvsdir = d.getVar("CVSDIR") or (d.getVar("DL_DIR") + "/cvs")
+        pkgdir = os.path.join(cvsdir, pkg)
         moddir = os.path.join(pkgdir, localdir)
         workdir = None
         if os.access(os.path.join(moddir, 'CVS'), os.R_OK):
diff --git a/poky/bitbake/lib/bb/fetch2/git.py b/poky/bitbake/lib/bb/fetch2/git.py
index 7b618c6..59a2ee8 100644
--- a/poky/bitbake/lib/bb/fetch2/git.py
+++ b/poky/bitbake/lib/bb/fetch2/git.py
@@ -261,7 +261,7 @@
                 gitsrcname = gitsrcname + '_' + ud.revisions[name]
 
         dl_dir = d.getVar("DL_DIR")
-        gitdir = d.getVar("GITDIR") or (dl_dir + "/git2/")
+        gitdir = d.getVar("GITDIR") or (dl_dir + "/git2")
         ud.clonedir = os.path.join(gitdir, gitsrcname)
         ud.localfile = ud.clonedir
 
@@ -299,17 +299,22 @@
         return ud.clonedir
 
     def need_update(self, ud, d):
+        return self.clonedir_need_update(ud, d) or self.shallow_tarball_need_update(ud) or self.tarball_need_update(ud)
+
+    def clonedir_need_update(self, ud, d):
         if not os.path.exists(ud.clonedir):
             return True
         for name in ud.names:
             if not self._contains_ref(ud, d, name, ud.clonedir):
                 return True
-        if ud.shallow and ud.write_shallow_tarballs and not os.path.exists(ud.fullshallow):
-            return True
-        if ud.write_tarballs and not os.path.exists(ud.fullmirror):
-            return True
         return False
 
+    def shallow_tarball_need_update(self, ud):
+        return ud.shallow and ud.write_shallow_tarballs and not os.path.exists(ud.fullshallow)
+
+    def tarball_need_update(self, ud):
+        return ud.write_tarballs and not os.path.exists(ud.fullmirror)
+
     def try_premirror(self, ud, d):
         # If we don't do this, updating an existing checkout with only premirrors
         # is not possible
@@ -322,16 +327,13 @@
     def download(self, ud, d):
         """Fetch url"""
 
-        no_clone = not os.path.exists(ud.clonedir)
-        need_update = no_clone or self.need_update(ud, d)
-
         # A current clone is preferred to either tarball, a shallow tarball is
         # preferred to an out of date clone, and a missing clone will use
         # either tarball.
-        if ud.shallow and os.path.exists(ud.fullshallow) and need_update:
+        if ud.shallow and os.path.exists(ud.fullshallow) and self.need_update(ud, d):
             ud.localpath = ud.fullshallow
             return
-        elif os.path.exists(ud.fullmirror) and no_clone:
+        elif os.path.exists(ud.fullmirror) and not os.path.exists(ud.clonedir):
             bb.utils.mkdirhier(ud.clonedir)
             runfetchcmd("tar -xzf %s" % ud.fullmirror, d, workdir=ud.clonedir)
 
@@ -353,6 +355,8 @@
         for name in ud.names:
             if not self._contains_ref(ud, d, name, ud.clonedir):
                 needupdate = True
+                break
+
         if needupdate:
             output = runfetchcmd("%s remote" % ud.basecmd, d, quiet=True, workdir=ud.clonedir)
             if "origin" in output:
@@ -372,6 +376,7 @@
             except OSError as exc:
                 if exc.errno != errno.ENOENT:
                     raise
+
         for name in ud.names:
             if not self._contains_ref(ud, d, name, ud.clonedir):
                 raise bb.fetch2.FetchError("Unable to find revision %s in branch %s even from upstream" % (ud.revisions[name], ud.branches[name]))
@@ -471,11 +476,30 @@
         if os.path.exists(destdir):
             bb.utils.prunedir(destdir)
 
-        if ud.shallow and (not os.path.exists(ud.clonedir) or self.need_update(ud, d)):
-            bb.utils.mkdirhier(destdir)
-            runfetchcmd("tar -xzf %s" % ud.fullshallow, d, workdir=destdir)
-        else:
-            runfetchcmd("%s clone %s %s/ %s" % (ud.basecmd, ud.cloneflags, ud.clonedir, destdir), d)
+        source_found = False
+        source_error = []
+
+        if not source_found:
+            clonedir_is_up_to_date = not self.clonedir_need_update(ud, d)
+            if clonedir_is_up_to_date:
+                runfetchcmd("%s clone %s %s/ %s" % (ud.basecmd, ud.cloneflags, ud.clonedir, destdir), d)
+                source_found = True
+            else:
+                source_error.append("clone directory not available or not up to date: " + ud.clonedir)
+
+        if not source_found:
+            if ud.shallow:
+                if os.path.exists(ud.fullshallow):
+                    bb.utils.mkdirhier(destdir)
+                    runfetchcmd("tar -xzf %s" % ud.fullshallow, d, workdir=destdir)
+                    source_found = True
+                else:
+                    source_error.append("shallow clone not available: " + ud.fullshallow)
+            else:
+                source_error.append("shallow clone not enabled")
+
+        if not source_found:
+            raise bb.fetch2.UnpackError("No up to date source found: " + "; ".join(source_error), ud.url)
 
         repourl = self._get_repo_url(ud)
         runfetchcmd("%s remote set-url origin %s" % (ud.basecmd, repourl), d, workdir=destdir)
diff --git a/poky/bitbake/lib/bb/fetch2/gitsm.py b/poky/bitbake/lib/bb/fetch2/gitsm.py
index 0aff100..35729db 100644
--- a/poky/bitbake/lib/bb/fetch2/gitsm.py
+++ b/poky/bitbake/lib/bb/fetch2/gitsm.py
@@ -31,9 +31,12 @@
 
 import os
 import bb
+import copy
 from   bb.fetch2.git import Git
 from   bb.fetch2 import runfetchcmd
 from   bb.fetch2 import logger
+from   bb.fetch2 import Fetch
+from   bb.fetch2 import BBFetchException
 
 class GitSM(Git):
     def supports(self, ud, d):
@@ -42,94 +45,206 @@
         """
         return ud.type in ['gitsm']
 
-    def uses_submodules(self, ud, d, wd):
-        for name in ud.names:
-            try:
-                runfetchcmd("%s show %s:.gitmodules" % (ud.basecmd, ud.revisions[name]), d, quiet=True, workdir=wd)
-                return True
-            except bb.fetch.FetchError:
-                pass
-        return False
-
-    def _set_relative_paths(self, repopath):
-        """
-        Fix submodule paths to be relative instead of absolute,
-        so that when we move the repo it doesn't break
-        (In Git 1.7.10+ this is done automatically)
-        """
-        submodules = []
-        with open(os.path.join(repopath, '.gitmodules'), 'r') as f:
-            for line in f.readlines():
-                if line.startswith('[submodule'):
-                    submodules.append(line.split('"')[1])
-
-        for module in submodules:
-            repo_conf = os.path.join(repopath, module, '.git')
-            if os.path.exists(repo_conf):
-                with open(repo_conf, 'r') as f:
-                    lines = f.readlines()
-                newpath = ''
-                for i, line in enumerate(lines):
-                    if line.startswith('gitdir:'):
-                        oldpath = line.split(': ')[-1].rstrip()
-                        if oldpath.startswith('/'):
-                            newpath = '../' * (module.count('/') + 1) + '.git/modules/' + module
-                            lines[i] = 'gitdir: %s\n' % newpath
-                            break
-                if newpath:
-                    with open(repo_conf, 'w') as f:
-                        for line in lines:
-                            f.write(line)
-
-            repo_conf2 = os.path.join(repopath, '.git', 'modules', module, 'config')
-            if os.path.exists(repo_conf2):
-                with open(repo_conf2, 'r') as f:
-                    lines = f.readlines()
-                newpath = ''
-                for i, line in enumerate(lines):
-                    if line.lstrip().startswith('worktree = '):
-                        oldpath = line.split(' = ')[-1].rstrip()
-                        if oldpath.startswith('/'):
-                            newpath = '../' * (module.count('/') + 3) + module
-                            lines[i] = '\tworktree = %s\n' % newpath
-                            break
-                if newpath:
-                    with open(repo_conf2, 'w') as f:
-                        for line in lines:
-                            f.write(line)
+    @staticmethod
+    def parse_gitmodules(gitmodules):
+        modules = {}
+        module = ""
+        for line in gitmodules.splitlines():
+            if line.startswith('[submodule'):
+                module = line.split('"')[1]
+                modules[module] = {}
+            elif module and line.strip().startswith('path'):
+                path = line.split('=')[1].strip()
+                modules[module]['path'] = path
+            elif module and line.strip().startswith('url'):
+                url = line.split('=')[1].strip()
+                modules[module]['url'] = url
+        return modules
 
     def update_submodules(self, ud, d):
-        # We have to convert bare -> full repo, do the submodule bit, then convert back
-        tmpclonedir = ud.clonedir + ".tmp"
-        gitdir = tmpclonedir + os.sep + ".git"
-        bb.utils.remove(tmpclonedir, True)
-        os.mkdir(tmpclonedir)
-        os.rename(ud.clonedir, gitdir)
-        runfetchcmd("sed " + gitdir + "/config -i -e 's/bare.*=.*true/bare = false/'", d)
-        runfetchcmd(ud.basecmd + " reset --hard", d, workdir=tmpclonedir)
-        runfetchcmd(ud.basecmd + " checkout -f " + ud.revisions[ud.names[0]], d, workdir=tmpclonedir)
-        runfetchcmd(ud.basecmd + " submodule update --init --recursive", d, workdir=tmpclonedir)
-        self._set_relative_paths(tmpclonedir)
-        runfetchcmd("sed " + gitdir + "/config -i -e 's/bare.*=.*false/bare = true/'", d, workdir=tmpclonedir)
-        os.rename(gitdir, ud.clonedir,)
-        bb.utils.remove(tmpclonedir, True)
+        submodules = []
+        paths = {}
+        uris = {}
+        local_paths = {}
+
+        for name in ud.names:
+            try:
+                gitmodules = runfetchcmd("%s show %s:.gitmodules" % (ud.basecmd, ud.revisions[name]), d, quiet=True, workdir=ud.clonedir)
+            except:
+                # No submodules to update
+                continue
+
+            for m, md in self.parse_gitmodules(gitmodules).items():
+                submodules.append(m)
+                paths[m] = md['path']
+                uris[m] = md['url']
+                if uris[m].startswith('..'):
+                    newud = copy.copy(ud)
+                    newud.path = os.path.realpath(os.path.join(newud.path, md['url']))
+                    uris[m] = Git._get_repo_url(self, newud)
+
+        for module in submodules:
+            module_hash = runfetchcmd("%s ls-tree -z -d %s %s" % (ud.basecmd, ud.revisions[name], paths[module]), d, quiet=True, workdir=ud.clonedir)
+            module_hash = module_hash.split()[2]
+
+            # Build new SRC_URI
+            proto = uris[module].split(':', 1)[0]
+            url = uris[module].replace('%s:' % proto, 'gitsm:', 1)
+            url += ';protocol=%s' % proto
+            url += ";name=%s" % module
+            url += ";bareclone=1;nocheckout=1;nobranch=1"
+
+            ld = d.createCopy()
+            # Not necessary to set SRC_URI, since we're passing the URI to
+            # Fetch.
+            #ld.setVar('SRC_URI', url)
+            ld.setVar('SRCREV_%s' % module, module_hash)
+
+            # Workaround for issues with SRCPV/SRCREV_FORMAT errors
+            # error refer to 'multiple' repositories.  Only the repository
+            # in the original SRC_URI actually matters...
+            ld.setVar('SRCPV', d.getVar('SRCPV'))
+            ld.setVar('SRCREV_FORMAT', module)
+
+            newfetch = Fetch([url], ld, cache=False)
+            newfetch.download()
+            local_paths[module] = newfetch.localpath(url)
+
+            # Correct the submodule references to the local download version...
+            runfetchcmd("%(basecmd)s config submodule.%(module)s.url %(url)s" % {'basecmd': ud.basecmd, 'module': module, 'url' : local_paths[module]}, d, workdir=ud.clonedir)
+
+            symlink_path = os.path.join(ud.clonedir, 'modules', paths[module])
+            if not os.path.exists(symlink_path):
+                try:
+                    os.makedirs(os.path.dirname(symlink_path), exist_ok=True)
+                except OSError:
+                    pass
+                os.symlink(local_paths[module], symlink_path)
+
+        return True
+
+    def need_update(self, ud, d):
+        main_repo_needs_update = Git.need_update(self, ud, d)
+
+        # First check that the main repository has enough history fetched. If it doesn't, then we don't
+        # even have the .gitmodules and gitlinks for the submodules to attempt asking whether the
+        # submodules' histories are recent enough.
+        if main_repo_needs_update:
+            return True
+
+        # Now check that the submodule histories are new enough. The git-submodule command doesn't have
+        # any clean interface for doing this aside from just attempting the checkout (with network
+        # fetched disabled).
+        return not self.update_submodules(ud, d)
 
     def download(self, ud, d):
         Git.download(self, ud, d)
 
         if not ud.shallow or ud.localpath != ud.fullshallow:
-            submodules = self.uses_submodules(ud, d, ud.clonedir)
-            if submodules:
-                self.update_submodules(ud, d)
+            self.update_submodules(ud, d)
+
+    def copy_submodules(self, submodules, ud, destdir, d):
+        if ud.bareclone:
+            repo_conf = destdir
+        else:
+            repo_conf = os.path.join(destdir, '.git')
+
+        if submodules and not os.path.exists(os.path.join(repo_conf, 'modules')):
+            os.mkdir(os.path.join(repo_conf, 'modules'))
+
+        for module, md in submodules.items():
+            srcpath = os.path.join(ud.clonedir, 'modules', md['path'])
+            modpath = os.path.join(repo_conf, 'modules', md['path'])
+
+            if os.path.exists(srcpath):
+                if os.path.exists(os.path.join(srcpath, '.git')):
+                    srcpath = os.path.join(srcpath, '.git')
+
+                target = modpath
+                if os.path.exists(modpath):
+                    target = os.path.dirname(modpath)
+
+                os.makedirs(os.path.dirname(target), exist_ok=True)
+                runfetchcmd("cp -fpLR %s %s" % (srcpath, target), d)
+            elif os.path.exists(modpath):
+                # Module already exists, likely unpacked from a shallow mirror clone
+                pass
+            else:
+                # This is fatal, as we do NOT want git-submodule to hit the network
+                raise bb.fetch2.FetchError('Submodule %s does not exist in %s or %s.' % (module, srcpath, modpath))
 
     def clone_shallow_local(self, ud, dest, d):
         super(GitSM, self).clone_shallow_local(ud, dest, d)
 
-        runfetchcmd('cp -fpPRH "%s/modules" "%s/"' % (ud.clonedir, os.path.join(dest, '.git')), d)
+        # Copy over the submodules' fetched histories too.
+        repo_conf = os.path.join(dest, '.git')
+
+        submodules = []
+        for name in ud.names:
+            try:
+                gitmodules = runfetchcmd("%s show %s:.gitmodules" % (ud.basecmd, ud.revision), d, quiet=True, workdir=dest)
+            except:
+                # No submodules to update
+                continue
+
+            submodules = self.parse_gitmodules(gitmodules)
+            self.copy_submodules(submodules, ud, dest, d)
 
     def unpack(self, ud, destdir, d):
         Git.unpack(self, ud, destdir, d)
 
-        if self.uses_submodules(ud, d, ud.destdir):
-            runfetchcmd(ud.basecmd + " checkout " + ud.revisions[ud.names[0]], d, workdir=ud.destdir)
-            runfetchcmd(ud.basecmd + " submodule update --init --recursive", d, workdir=ud.destdir)
+        # Copy over the submodules' fetched histories too.
+        if ud.bareclone:
+            repo_conf = ud.destdir
+        else:
+            repo_conf = os.path.join(ud.destdir, '.git')
+
+        update_submodules = False
+        paths = {}
+        uris = {}
+        local_paths = {}
+        for name in ud.names:
+            try:
+                gitmodules = runfetchcmd("%s show HEAD:.gitmodules" % (ud.basecmd), d, quiet=True, workdir=ud.destdir)
+            except:
+                # No submodules to update
+                continue
+
+            submodules = self.parse_gitmodules(gitmodules)
+            self.copy_submodules(submodules, ud, ud.destdir, d)
+
+            submodules_queue = [(module, os.path.join(repo_conf, 'modules', md['path'])) for module, md in submodules.items()]
+            while len(submodules_queue) != 0:
+                module, modpath = submodules_queue.pop()
+
+                # add submodule children recursively
+                try:
+                    gitmodules = runfetchcmd("%s show HEAD:.gitmodules" % (ud.basecmd), d, quiet=True, workdir=modpath)
+                    for m, md in self.parse_gitmodules(gitmodules).items():
+                        submodules_queue.append([m, os.path.join(modpath, 'modules', md['path'])])
+                except:
+                    # no children
+                    pass
+
+
+                # There are submodules to update
+                update_submodules = True
+
+                # Determine (from the submodule) the correct url to reference
+                try:
+                    output = runfetchcmd("%(basecmd)s config remote.origin.url" % {'basecmd': ud.basecmd}, d, workdir=modpath)
+                except bb.fetch2.FetchError as e:
+                    # No remote url defined in this submodule
+                    continue
+
+                local_paths[module] = output
+
+                # Setup the local URL properly (like git submodule init or sync would do...)
+                runfetchcmd("%(basecmd)s config submodule.%(module)s.url %(url)s" % {'basecmd': ud.basecmd, 'module': module, 'url' : local_paths[module]}, d, workdir=ud.destdir)
+
+                # Ensure the submodule repository is NOT set to bare, since we're checking it out...
+                runfetchcmd("%s config core.bare false" % (ud.basecmd), d, quiet=True, workdir=modpath)
+
+        if update_submodules:
+            # Run submodule update, this sets up the directories -- without touching the config
+            runfetchcmd("%s submodule update --recursive --no-fetch" % (ud.basecmd), d, quiet=True, workdir=ud.destdir)
diff --git a/poky/bitbake/lib/bb/fetch2/hg.py b/poky/bitbake/lib/bb/fetch2/hg.py
index d0857e6..936d043 100644
--- a/poky/bitbake/lib/bb/fetch2/hg.py
+++ b/poky/bitbake/lib/bb/fetch2/hg.py
@@ -80,7 +80,7 @@
         ud.fullmirror = os.path.join(d.getVar("DL_DIR"), mirrortarball)
         ud.mirrortarballs = [mirrortarball]
 
-        hgdir = d.getVar("HGDIR") or (d.getVar("DL_DIR") + "/hg/")
+        hgdir = d.getVar("HGDIR") or (d.getVar("DL_DIR") + "/hg")
         ud.pkgdir = os.path.join(hgdir, hgsrcname)
         ud.moddir = os.path.join(ud.pkgdir, ud.module)
         ud.localfile = ud.moddir
diff --git a/poky/bitbake/lib/bb/fetch2/osc.py b/poky/bitbake/lib/bb/fetch2/osc.py
index 2b4f7d9..6c60456 100644
--- a/poky/bitbake/lib/bb/fetch2/osc.py
+++ b/poky/bitbake/lib/bb/fetch2/osc.py
@@ -32,8 +32,9 @@
         ud.module = ud.parm["module"]
 
         # Create paths to osc checkouts
+        oscdir = d.getVar("OSCDIR") or (d.getVar("DL_DIR") + "/osc")
         relpath = self._strip_leading_slashes(ud.path)
-        ud.pkgdir = os.path.join(d.getVar('OSCDIR'), ud.host)
+        ud.pkgdir = os.path.join(oscdir, ud.host)
         ud.moddir = os.path.join(ud.pkgdir, relpath, ud.module)
 
         if 'rev' in ud.parm:
@@ -54,7 +55,7 @@
         command is "fetch", "update", "info"
         """
 
-        basecmd = d.expand('${FETCHCMD_osc}')
+        basecmd = d.getVar("FETCHCMD_osc") or "/usr/bin/env osc"
 
         proto = ud.parm.get('protocol', 'ocs')
 
diff --git a/poky/bitbake/lib/bb/fetch2/perforce.py b/poky/bitbake/lib/bb/fetch2/perforce.py
index 3debad5..903a8e6 100644
--- a/poky/bitbake/lib/bb/fetch2/perforce.py
+++ b/poky/bitbake/lib/bb/fetch2/perforce.py
@@ -43,13 +43,9 @@
         provided by the env, use it.  If P4PORT is specified by the recipe, use
         its values, which may override the settings in P4CONFIG.
         """
-        ud.basecmd = d.getVar('FETCHCMD_p4')
-        if not ud.basecmd:
-            ud.basecmd = "/usr/bin/env p4"
+        ud.basecmd = d.getVar("FETCHCMD_p4") or "/usr/bin/env p4"
 
-        ud.dldir = d.getVar('P4DIR')
-        if not ud.dldir:
-            ud.dldir = '%s/%s' % (d.getVar('DL_DIR'), 'p4')
+        ud.dldir = d.getVar("P4DIR") or (d.getVar("DL_DIR") + "/p4")
 
         path = ud.url.split('://')[1]
         path = path.split(';')[0]
diff --git a/poky/bitbake/lib/bb/fetch2/repo.py b/poky/bitbake/lib/bb/fetch2/repo.py
index c22d9b5..8c7e818 100644
--- a/poky/bitbake/lib/bb/fetch2/repo.py
+++ b/poky/bitbake/lib/bb/fetch2/repo.py
@@ -45,6 +45,8 @@
         "master".
         """
 
+        ud.basecmd = d.getVar("FETCHCMD_repo") or "/usr/bin/env repo"
+
         ud.proto = ud.parm.get('protocol', 'git')
         ud.branch = ud.parm.get('branch', 'master')
         ud.manifest = ud.parm.get('manifest', 'default.xml')
@@ -60,8 +62,8 @@
             logger.debug(1, "%s already exists (or was stashed). Skipping repo init / sync.", ud.localpath)
             return
 
+        repodir = d.getVar("REPODIR") or (d.getVar("DL_DIR") + "/repo")
         gitsrcname = "%s%s" % (ud.host, ud.path.replace("/", "."))
-        repodir = d.getVar("REPODIR") or os.path.join(d.getVar("DL_DIR"), "repo")
         codir = os.path.join(repodir, gitsrcname, ud.manifest)
 
         if ud.user:
@@ -72,11 +74,11 @@
         repodir = os.path.join(codir, "repo")
         bb.utils.mkdirhier(repodir)
         if not os.path.exists(os.path.join(repodir, ".repo")):
-            bb.fetch2.check_network_access(d, "repo init -m %s -b %s -u %s://%s%s%s" % (ud.manifest, ud.branch, ud.proto, username, ud.host, ud.path), ud.url)
-            runfetchcmd("repo init -m %s -b %s -u %s://%s%s%s" % (ud.manifest, ud.branch, ud.proto, username, ud.host, ud.path), d, workdir=repodir)
+            bb.fetch2.check_network_access(d, "%s init -m %s -b %s -u %s://%s%s%s" % (ud.basecmd, ud.manifest, ud.branch, ud.proto, username, ud.host, ud.path), ud.url)
+            runfetchcmd("%s init -m %s -b %s -u %s://%s%s%s" % (ud.basecmd, ud.manifest, ud.branch, ud.proto, username, ud.host, ud.path), d, workdir=repodir)
 
-        bb.fetch2.check_network_access(d, "repo sync %s" % ud.url, ud.url)
-        runfetchcmd("repo sync", d, workdir=repodir)
+        bb.fetch2.check_network_access(d, "%s sync %s" % (ud.basecmd, ud.url), ud.url)
+        runfetchcmd("%s sync" % ud.basecmd, d, workdir=repodir)
 
         scmdata = ud.parm.get("scmdata", "")
         if scmdata == "keep":
diff --git a/poky/bitbake/lib/bb/fetch2/svn.py b/poky/bitbake/lib/bb/fetch2/svn.py
index 3f172ee..9dcf3eb 100644
--- a/poky/bitbake/lib/bb/fetch2/svn.py
+++ b/poky/bitbake/lib/bb/fetch2/svn.py
@@ -49,7 +49,7 @@
         if not "module" in ud.parm:
             raise MissingParameterError('module', ud.url)
 
-        ud.basecmd = d.getVar('FETCHCMD_svn')
+        ud.basecmd = d.getVar("FETCHCMD_svn") or "/usr/bin/env svn --non-interactive --trust-server-cert"
 
         ud.module = ud.parm["module"]
 
@@ -59,9 +59,13 @@
             ud.path_spec = ud.parm["path_spec"]
 
         # Create paths to svn checkouts
+        svndir = d.getVar("SVNDIR") or (d.getVar("DL_DIR") + "/svn")
         relpath = self._strip_leading_slashes(ud.path)
-        ud.pkgdir = os.path.join(d.expand('${SVNDIR}'), ud.host, relpath)
+        ud.pkgdir = os.path.join(svndir, ud.host, relpath)
         ud.moddir = os.path.join(ud.pkgdir, ud.module)
+        # Protects the repository from concurrent updates, e.g. from two
+        # recipes fetching different revisions at the same time
+        ud.svnlock = os.path.join(ud.pkgdir, "svn.lock")
 
         ud.setup_revisions(d)
 
@@ -122,35 +126,40 @@
 
         logger.debug(2, "Fetch: checking for module directory '" + ud.moddir + "'")
 
-        if os.access(os.path.join(ud.moddir, '.svn'), os.R_OK):
-            svnupdatecmd = self._buildsvncommand(ud, d, "update")
-            logger.info("Update " + ud.url)
-            # We need to attempt to run svn upgrade first in case its an older working format
-            try:
-                runfetchcmd(ud.basecmd + " upgrade", d, workdir=ud.moddir)
-            except FetchError:
-                pass
-            logger.debug(1, "Running %s", svnupdatecmd)
-            bb.fetch2.check_network_access(d, svnupdatecmd, ud.url)
-            runfetchcmd(svnupdatecmd, d, workdir=ud.moddir)
-        else:
-            svnfetchcmd = self._buildsvncommand(ud, d, "fetch")
-            logger.info("Fetch " + ud.url)
-            # check out sources there
-            bb.utils.mkdirhier(ud.pkgdir)
-            logger.debug(1, "Running %s", svnfetchcmd)
-            bb.fetch2.check_network_access(d, svnfetchcmd, ud.url)
-            runfetchcmd(svnfetchcmd, d, workdir=ud.pkgdir)
+        lf = bb.utils.lockfile(ud.svnlock)
 
-        scmdata = ud.parm.get("scmdata", "")
-        if scmdata == "keep":
-            tar_flags = ""
-        else:
-            tar_flags = "--exclude='.svn'"
+        try:
+            if os.access(os.path.join(ud.moddir, '.svn'), os.R_OK):
+                svnupdatecmd = self._buildsvncommand(ud, d, "update")
+                logger.info("Update " + ud.url)
+                # We need to attempt to run svn upgrade first in case its an older working format
+                try:
+                    runfetchcmd(ud.basecmd + " upgrade", d, workdir=ud.moddir)
+                except FetchError:
+                    pass
+                logger.debug(1, "Running %s", svnupdatecmd)
+                bb.fetch2.check_network_access(d, svnupdatecmd, ud.url)
+                runfetchcmd(svnupdatecmd, d, workdir=ud.moddir)
+            else:
+                svnfetchcmd = self._buildsvncommand(ud, d, "fetch")
+                logger.info("Fetch " + ud.url)
+                # check out sources there
+                bb.utils.mkdirhier(ud.pkgdir)
+                logger.debug(1, "Running %s", svnfetchcmd)
+                bb.fetch2.check_network_access(d, svnfetchcmd, ud.url)
+                runfetchcmd(svnfetchcmd, d, workdir=ud.pkgdir)
 
-        # tar them up to a defined filename
-        runfetchcmd("tar %s -czf %s %s" % (tar_flags, ud.localpath, ud.path_spec), d,
-                    cleanup=[ud.localpath], workdir=ud.pkgdir)
+            scmdata = ud.parm.get("scmdata", "")
+            if scmdata == "keep":
+                tar_flags = ""
+            else:
+                tar_flags = "--exclude='.svn'"
+
+            # tar them up to a defined filename
+            runfetchcmd("tar %s -czf %s %s" % (tar_flags, ud.localpath, ud.path_spec), d,
+                        cleanup=[ud.localpath], workdir=ud.pkgdir)
+        finally:
+            bb.utils.unlockfile(lf)
 
     def clean(self, ud, d):
         """ Clean SVN specific files and dirs """
diff --git a/poky/bitbake/lib/bb/msg.py b/poky/bitbake/lib/bb/msg.py
index f1723be..96f077e 100644
--- a/poky/bitbake/lib/bb/msg.py
+++ b/poky/bitbake/lib/bb/msg.py
@@ -40,6 +40,7 @@
     VERBOSE = logging.INFO - 1
     NOTE = logging.INFO
     PLAIN = logging.INFO + 1
+    VERBNOTE = logging.INFO + 2
     ERROR = logging.ERROR
     WARNING = logging.WARNING
     CRITICAL = logging.CRITICAL
@@ -51,6 +52,7 @@
         VERBOSE: 'NOTE',
         NOTE    : 'NOTE',
         PLAIN  : '',
+        VERBNOTE: 'NOTE',
         WARNING : 'WARNING',
         ERROR   : 'ERROR',
         CRITICAL: 'ERROR',
@@ -66,6 +68,7 @@
         VERBOSE : BASECOLOR,
         NOTE    : BASECOLOR,
         PLAIN   : BASECOLOR,
+        VERBNOTE: BASECOLOR,
         WARNING : YELLOW,
         ERROR   : RED,
         CRITICAL: RED,
diff --git a/poky/bitbake/lib/bb/parse/ast.py b/poky/bitbake/lib/bb/parse/ast.py
index 6690dc5..9d20c32 100644
--- a/poky/bitbake/lib/bb/parse/ast.py
+++ b/poky/bitbake/lib/bb/parse/ast.py
@@ -343,30 +343,31 @@
 
 def finalize(fn, d, variant = None):
     saved_handlers = bb.event.get_handlers().copy()
+    try:
+        for var in d.getVar('__BBHANDLERS', False) or []:
+            # try to add the handler
+            handlerfn = d.getVarFlag(var, "filename", False)
+            if not handlerfn:
+                bb.fatal("Undefined event handler function '%s'" % var)
+            handlerln = int(d.getVarFlag(var, "lineno", False))
+            bb.event.register(var, d.getVar(var, False), (d.getVarFlag(var, "eventmask") or "").split(), handlerfn, handlerln)
 
-    for var in d.getVar('__BBHANDLERS', False) or []:
-        # try to add the handler
-        handlerfn = d.getVarFlag(var, "filename", False)
-        if not handlerfn:
-            bb.fatal("Undefined event handler function '%s'" % var)
-        handlerln = int(d.getVarFlag(var, "lineno", False))
-        bb.event.register(var, d.getVar(var, False), (d.getVarFlag(var, "eventmask") or "").split(), handlerfn, handlerln)
+        bb.event.fire(bb.event.RecipePreFinalise(fn), d)
 
-    bb.event.fire(bb.event.RecipePreFinalise(fn), d)
+        bb.data.expandKeys(d)
+        runAnonFuncs(d)
 
-    bb.data.expandKeys(d)
-    runAnonFuncs(d)
+        tasklist = d.getVar('__BBTASKS', False) or []
+        bb.event.fire(bb.event.RecipeTaskPreProcess(fn, list(tasklist)), d)
+        bb.build.add_tasks(tasklist, d)
 
-    tasklist = d.getVar('__BBTASKS', False) or []
-    bb.event.fire(bb.event.RecipeTaskPreProcess(fn, list(tasklist)), d)
-    bb.build.add_tasks(tasklist, d)
+        bb.parse.siggen.finalise(fn, d, variant)
 
-    bb.parse.siggen.finalise(fn, d, variant)
+        d.setVar('BBINCLUDED', bb.parse.get_file_depends(d))
 
-    d.setVar('BBINCLUDED', bb.parse.get_file_depends(d))
-
-    bb.event.fire(bb.event.RecipeParsed(fn), d)
-    bb.event.set_handlers(saved_handlers)
+        bb.event.fire(bb.event.RecipeParsed(fn), d)
+    finally:
+        bb.event.set_handlers(saved_handlers)
 
 def _create_variants(datastores, names, function, onlyfinalise):
     def create_variant(name, orig_d, arg = None):
diff --git a/poky/bitbake/lib/bb/runqueue.py b/poky/bitbake/lib/bb/runqueue.py
index 480a851..4d5d876 100644
--- a/poky/bitbake/lib/bb/runqueue.py
+++ b/poky/bitbake/lib/bb/runqueue.py
@@ -94,13 +94,13 @@
         self.active = self.active - 1
         self.failed = self.failed + 1
 
-    def taskCompleted(self, number = 1):
-        self.active = self.active - number
-        self.completed = self.completed + number
+    def taskCompleted(self):
+        self.active = self.active - 1
+        self.completed = self.completed + 1
 
-    def taskSkipped(self, number = 1):
-        self.active = self.active + number
-        self.skipped = self.skipped + number
+    def taskSkipped(self):
+        self.active = self.active + 1
+        self.skipped = self.skipped + 1
 
     def taskActive(self):
         self.active = self.active + 1
@@ -134,6 +134,7 @@
         self.prio_map = [self.rqdata.runtaskentries.keys()]
 
         self.buildable = []
+        self.skip_maxthread = {}
         self.stamps = {}
         for tid in self.rqdata.runtaskentries:
             (mc, fn, taskname, taskfn) = split_tid_mcfn(tid)
@@ -150,8 +151,25 @@
         self.buildable = [x for x in self.buildable if x not in self.rq.runq_running]
         if not self.buildable:
             return None
+
+        # Filter out tasks that have a max number of threads that have been exceeded
+        skip_buildable = {}
+        for running in self.rq.runq_running.difference(self.rq.runq_complete):
+            rtaskname = taskname_from_tid(running)
+            if rtaskname not in self.skip_maxthread:
+                self.skip_maxthread[rtaskname] = self.rq.cfgData.getVarFlag(rtaskname, "number_threads")
+            if not self.skip_maxthread[rtaskname]:
+                continue
+            if rtaskname in skip_buildable:
+                skip_buildable[rtaskname] += 1
+            else:
+                skip_buildable[rtaskname] = 1
+
         if len(self.buildable) == 1:
             tid = self.buildable[0]
+            taskname = taskname_from_tid(tid)
+            if taskname in skip_buildable and skip_buildable[taskname] >= int(self.skip_maxthread[taskname]):
+                return None
             stamp = self.stamps[tid]
             if stamp not in self.rq.build_stamps.values():
                 return tid
@@ -164,6 +182,9 @@
         best = None
         bestprio = None
         for tid in self.buildable:
+            taskname = taskname_from_tid(tid)
+            if taskname in skip_buildable and skip_buildable[taskname] >= int(self.skip_maxthread[taskname]):
+                continue
             prio = self.rev_prio_map[tid]
             if bestprio is None or bestprio > prio:
                 stamp = self.stamps[tid]
@@ -178,7 +199,7 @@
         """
         Return the id of the task we should build next
         """
-        if self.rq.stats.active < self.rq.number_tasks:
+        if self.rq.can_start_task():
             return self.next_buildable_task()
 
     def newbuildable(self, task):
@@ -581,6 +602,19 @@
                     if t in taskData[mc].taskentries:
                         depends.add(t)
 
+        def add_mc_dependencies(mc, tid):
+            mcdeps = taskData[mc].get_mcdepends()
+            for dep in mcdeps:
+                mcdependency = dep.split(':')
+                pn = mcdependency[3]
+                frommc = mcdependency[1]
+                mcdep = mcdependency[2]
+                deptask = mcdependency[4]
+                if mc == frommc:
+                    fn = taskData[mcdep].build_targets[pn][0]
+                    newdep = '%s:%s' % (fn,deptask)
+                    taskData[mc].taskentries[tid].tdepends.append(newdep)
+
         for mc in taskData:
             for tid in taskData[mc].taskentries:
 
@@ -597,12 +631,16 @@
                 if fn in taskData[mc].failed_fns:
                     continue
 
+                # We add multiconfig dependencies before processing internal task deps (tdepends)
+                if 'mcdepends' in task_deps and taskname in task_deps['mcdepends']:
+                    add_mc_dependencies(mc, tid)
+
                 # Resolve task internal dependencies
                 #
                 # e.g. addtask before X after Y
                 for t in taskData[mc].taskentries[tid].tdepends:
-                    (_, depfn, deptaskname, _) = split_tid_mcfn(t)
-                    depends.add(build_tid(mc, depfn, deptaskname))
+                    (depmc, depfn, deptaskname, _) = split_tid_mcfn(t)
+                    depends.add(build_tid(depmc, depfn, deptaskname))
 
                 # Resolve 'deptask' dependencies
                 #
@@ -1032,7 +1070,7 @@
                     msg += "\n%s has unique rprovides:\n  %s" % (provfn, "\n  ".join(rprovide_results[provfn] - commonrprovs))
 
                 if self.warn_multi_bb:
-                    logger.warning(msg)
+                    logger.verbnote(msg)
                 else:
                     logger.error(msg)
 
@@ -1040,7 +1078,7 @@
 
         # Create a whitelist usable by the stamp checks
         self.stampfnwhitelist = {}
-        for mc in self.taskData: 
+        for mc in self.taskData:
             self.stampfnwhitelist[mc] = []
             for entry in self.stampwhitelist.split():
                 if entry not in self.taskData[mc].build_targets:
@@ -1072,7 +1110,7 @@
                     bb.debug(1, "Task %s is marked nostamp, cannot invalidate this task" % taskname)
             else:
                 logger.verbose("Invalidate task %s, %s", taskname, fn)
-                bb.parse.siggen.invalidate_task(taskname, self.dataCaches[mc], fn)
+                bb.parse.siggen.invalidate_task(taskname, self.dataCaches[mc], taskfn)
 
         self.init_progress_reporter.next_stage()
 
@@ -1717,6 +1755,10 @@
         valid = bb.utils.better_eval(call, locs)
         return valid
 
+    def can_start_task(self):
+        can_start = self.stats.active < self.number_tasks
+        return can_start
+
 class RunQueueExecuteDummy(RunQueueExecute):
     def __init__(self, rq):
         self.rq = rq
@@ -1790,13 +1832,14 @@
             bb.build.del_stamp(taskname, self.rqdata.dataCaches[mc], taskfn)
             self.rq.scenequeue_covered.remove(tid)
 
-        toremove = covered_remove
+        toremove = covered_remove | self.rq.scenequeue_notcovered
         for task in toremove:
             logger.debug(1, 'Not skipping task %s due to setsceneverify', task)
         while toremove:
             covered_remove = []
             for task in toremove:
-                removecoveredtask(task)
+                if task in self.rq.scenequeue_covered:
+                    removecoveredtask(task)
                 for deptask in self.rqdata.runtaskentries[task].depends:
                     if deptask not in self.rq.scenequeue_covered:
                         continue
@@ -1866,14 +1909,13 @@
                 continue
             if revdep in self.runq_buildable:
                 continue
-            alldeps = 1
+            alldeps = True
             for dep in self.rqdata.runtaskentries[revdep].depends:
                 if dep not in self.runq_complete:
-                    alldeps = 0
-            if alldeps == 1:
+                    alldeps = False
+                    break
+            if alldeps:
                 self.setbuildable(revdep)
-                fn = fn_from_tid(revdep)
-                taskname = taskname_from_tid(revdep)
                 logger.debug(1, "Marking task %s as buildable", revdep)
 
     def task_complete(self, task):
@@ -1897,8 +1939,8 @@
         self.setbuildable(task)
         bb.event.fire(runQueueTaskSkipped(task, self.stats, self.rq, reason), self.cfgData)
         self.task_completeoutright(task)
-        self.stats.taskCompleted()
         self.stats.taskSkipped()
+        self.stats.taskCompleted()
 
     def execute(self):
         """
@@ -2008,7 +2050,7 @@
             self.build_stamps2.append(self.build_stamps[task])
             self.runq_running.add(task)
             self.stats.taskActive()
-            if self.stats.active < self.number_tasks:
+            if self.can_start_task():
                 return True
 
         if self.stats.active > 0:
@@ -2063,6 +2105,7 @@
         # If we don't have any setscene functions, skip this step
         if len(self.rqdata.runq_setscene_tids) == 0:
             rq.scenequeue_covered = set()
+            rq.scenequeue_notcovered = set()
             rq.state = runQueueRunInit
             return
 
@@ -2278,10 +2321,15 @@
                 sq_hash.append(self.rqdata.runtaskentries[tid].hash)
                 sq_taskname.append(taskname)
                 sq_task.append(tid)
+
+            self.cooker.data.setVar("BB_SETSCENE_STAMPCURRENT_COUNT", len(stamppresent))
+
             call = self.rq.hashvalidate + "(sq_fn, sq_task, sq_hash, sq_hashfn, d)"
             locs = { "sq_fn" : sq_fn, "sq_task" : sq_taskname, "sq_hash" : sq_hash, "sq_hashfn" : sq_hashfn, "d" : self.cooker.data }
             valid = bb.utils.better_eval(call, locs)
 
+            self.cooker.data.delVar("BB_SETSCENE_STAMPCURRENT_COUNT")
+
             valid_new = stamppresent
             for v in valid:
                 valid_new.append(sq_task[v])
@@ -2343,8 +2391,8 @@
     def task_failoutright(self, task):
         self.runq_running.add(task)
         self.runq_buildable.add(task)
-        self.stats.taskCompleted()
         self.stats.taskSkipped()
+        self.stats.taskCompleted()
         self.scenequeue_notcovered.add(task)
         self.scenequeue_updatecounters(task, True)
 
@@ -2352,8 +2400,8 @@
         self.runq_running.add(task)
         self.runq_buildable.add(task)
         self.task_completeoutright(task)
-        self.stats.taskCompleted()
         self.stats.taskSkipped()
+        self.stats.taskCompleted()
 
     def execute(self):
         """
@@ -2363,7 +2411,7 @@
         self.rq.read_workers()
 
         task = None
-        if self.stats.active < self.number_tasks:
+        if self.can_start_task():
             # Find the next setscene to run
             for nexttask in self.rqdata.runq_setscene_tids:
                 if nexttask in self.runq_buildable and nexttask not in self.runq_running and self.stamps[nexttask] not in self.build_stamps.values():
@@ -2422,7 +2470,7 @@
             self.build_stamps2.append(self.build_stamps[task])
             self.runq_running.add(task)
             self.stats.taskActive()
-            if self.stats.active < self.number_tasks:
+            if self.can_start_task():
                 return True
 
         if self.stats.active > 0:
diff --git a/poky/bitbake/lib/bb/server/process.py b/poky/bitbake/lib/bb/server/process.py
index 0749b5b..42d7907 100644
--- a/poky/bitbake/lib/bb/server/process.py
+++ b/poky/bitbake/lib/bb/server/process.py
@@ -377,11 +377,12 @@
         if os.path.exists(sockname):
             os.unlink(sockname)
 
+        # Place the log in the builddirectory alongside the lock file
+        logfile = os.path.join(os.path.dirname(self.bitbake_lock.name), "bitbake-cookerdaemon.log")
+
         self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
         # AF_UNIX has path length issues so chdir here to workaround
         cwd = os.getcwd()
-        logfile = os.path.join(cwd, "bitbake-cookerdaemon.log")
-
         try:
             os.chdir(os.path.dirname(sockname))
             self.sock.bind(os.path.basename(sockname))
@@ -394,11 +395,16 @@
         bb.daemonize.createDaemon(self._startServer, logfile)
         self.sock.close()
         self.bitbake_lock.close()
+        os.close(self.readypipein)
 
         ready = ConnectionReader(self.readypipe)
         r = ready.poll(30)
         if r:
-            r = ready.get()
+            try:
+                r = ready.get()
+            except EOFError:
+                # Trap the child exitting/closing the pipe and error out
+                r = None
         if not r or r != "ready":
             ready.close()
             bb.error("Unable to start bitbake server")
@@ -424,7 +430,6 @@
                         bb.error("Server log for this session (%s):\n%s" % (logfile, "".join(lines)))
             raise SystemExit(1)
         ready.close()
-        os.close(self.readypipein)
 
     def _startServer(self):
         print(self.start_log_format % (os.getpid(), datetime.datetime.now().strftime(self.start_log_datetime_format)))
@@ -432,15 +437,11 @@
 
         server = ProcessServer(self.bitbake_lock, self.sock, self.sockname)
         self.configuration.setServerRegIdleCallback(server.register_idle_function)
+        os.close(self.readypipe)
         writer = ConnectionWriter(self.readypipein)
-        try:
-            self.cooker = bb.cooker.BBCooker(self.configuration, self.featureset)
-            writer.send("ready")
-        except:
-            writer.send("fail")
-            raise
-        finally:
-            os.close(self.readypipein)
+        self.cooker = bb.cooker.BBCooker(self.configuration, self.featureset)
+        writer.send("ready")
+        writer.close()
         server.cooker = self.cooker
         server.server_timeout = self.configuration.server_timeout
         server.xmlrpcinterface = self.configuration.xmlrpcinterface
@@ -455,9 +456,6 @@
     # AF_UNIX has path length issues so chdir here to workaround
     cwd = os.getcwd()
 
-    readfd = writefd = readfd1 = writefd1 = readfd2 = writefd2 = None
-    eq = command_chan_recv = command_chan = None
-
     try:
         try:
             os.chdir(os.path.dirname(sockname))
@@ -465,6 +463,9 @@
         finally:
             os.chdir(cwd)
 
+        readfd = writefd = readfd1 = writefd1 = readfd2 = writefd2 = None
+        eq = command_chan_recv = command_chan = None
+
         # Send an fd for the remote to write events to
         readfd, writefd = os.pipe()
         eq = BBUIEventQueue(readfd)
diff --git a/poky/bitbake/lib/bb/siggen.py b/poky/bitbake/lib/bb/siggen.py
index 5ef82d7..fdbb2a3 100644
--- a/poky/bitbake/lib/bb/siggen.py
+++ b/poky/bitbake/lib/bb/siggen.py
@@ -110,42 +110,13 @@
         ignore_mismatch = ((d.getVar("BB_HASH_IGNORE_MISMATCH") or '') == '1')
         tasklist, gendeps, lookupcache = bb.data.generate_dependencies(d)
 
-        taskdeps = {}
-        basehash = {}
+        taskdeps, basehash = bb.data.generate_dependency_hash(tasklist, gendeps, lookupcache, self.basewhitelist, fn)
 
         for task in tasklist:
-            data = lookupcache[task]
-
-            if data is None:
-                bb.error("Task %s from %s seems to be empty?!" % (task, fn))
-                data = ''
-
-            gendeps[task] -= self.basewhitelist
-            newdeps = gendeps[task]
-            seen = set()
-            while newdeps:
-                nextdeps = newdeps
-                seen |= nextdeps
-                newdeps = set()
-                for dep in nextdeps:
-                    if dep in self.basewhitelist:
-                        continue
-                    gendeps[dep] -= self.basewhitelist
-                    newdeps |= gendeps[dep]
-                newdeps -= seen
-
-            alldeps = sorted(seen)
-            for dep in alldeps:
-                data = data + dep
-                var = lookupcache[dep]
-                if var is not None:
-                    data = data + str(var)
-            datahash = hashlib.md5(data.encode("utf-8")).hexdigest()
             k = fn + "." + task
-            if not ignore_mismatch and k in self.basehash and self.basehash[k] != datahash:
-                bb.error("When reparsing %s, the basehash value changed from %s to %s. The metadata is not deterministic and this needs to be fixed." % (k, self.basehash[k], datahash))
-            self.basehash[k] = datahash
-            taskdeps[task] = alldeps
+            if not ignore_mismatch and k in self.basehash and self.basehash[k] != basehash[k]:
+                bb.error("When reparsing %s, the basehash value changed from %s to %s. The metadata is not deterministic and this needs to be fixed." % (k, self.basehash[k], basehash[k]))
+            self.basehash[k] = basehash[k]
 
         self.taskdeps[fn] = taskdeps
         self.gendeps[fn] = gendeps
@@ -193,19 +164,28 @@
         return taint
 
     def get_taskhash(self, fn, task, deps, dataCache):
+
+        mc = ''
+        if fn.startswith('multiconfig:'):
+            mc = fn.split(':')[1]
         k = fn + "." + task
+
         data = dataCache.basetaskhash[k]
         self.basehash[k] = data
         self.runtaskdeps[k] = []
         self.file_checksum_values[k] = []
         recipename = dataCache.pkg_fn[fn]
-
         for dep in sorted(deps, key=clean_basepath):
-            depname = dataCache.pkg_fn[self.pkgnameextract.search(dep).group('fn')]
+            pkgname = self.pkgnameextract.search(dep).group('fn')
+            if mc:
+                depmc = pkgname.split(':')[1]
+                if mc != depmc:
+                    continue
+            depname = dataCache.pkg_fn[pkgname]
             if not self.rundep_check(fn, recipename, task, dep, depname, dataCache):
                 continue
             if dep not in self.taskhash:
-                bb.fatal("%s is not in taskhash, caller isn't calling in dependency order?", dep)
+                bb.fatal("%s is not in taskhash, caller isn't calling in dependency order?" % dep)
             data = data + self.taskhash[dep]
             self.runtaskdeps[k].append(dep)
 
@@ -347,7 +327,7 @@
 
     def stampcleanmask(self, stampbase, fn, taskname, extrainfo):
         return self.stampfile(stampbase, fn, taskname, extrainfo, clean=True)
-        
+
     def invalidate_task(self, task, d, fn):
         bb.note("Tainting hash to force rebuild of task %s, %s" % (fn, task))
         bb.build.write_taint(task, d, fn)
@@ -362,10 +342,10 @@
 def init_colors(enable_color):
     """Initialise colour dict for passing to compare_sigfiles()"""
     # First set up the colours
-    colors = {'color_title':   '\033[1;37;40m',
-              'color_default': '\033[0;37;40m',
-              'color_add':     '\033[1;32;40m',
-              'color_remove':  '\033[1;31;40m',
+    colors = {'color_title':   '\033[1m',
+              'color_default': '\033[0m',
+              'color_add':     '\033[0;32m',
+              'color_remove':  '\033[0;31m',
              }
     # Leave all keys present but clear the values
     if not enable_color:
@@ -636,7 +616,7 @@
                         if collapsed:
                             output.extend(recout)
                         else:
-                            # If a dependent hash changed, might as well print the line above and then defer to the changes in 
+                            # If a dependent hash changed, might as well print the line above and then defer to the changes in
                             # that hash since in all likelyhood, they're the same changes this task also saw.
                             output = [output[-1]] + recout
 
diff --git a/poky/bitbake/lib/bb/taskdata.py b/poky/bitbake/lib/bb/taskdata.py
index 0ea6c0b..94e822c 100644
--- a/poky/bitbake/lib/bb/taskdata.py
+++ b/poky/bitbake/lib/bb/taskdata.py
@@ -70,6 +70,8 @@
 
         self.skiplist = skiplist
 
+        self.mcdepends = []
+
     def add_tasks(self, fn, dataCache):
         """
         Add tasks for a given fn to the database
@@ -88,6 +90,13 @@
 
         self.add_extra_deps(fn, dataCache)
 
+        def add_mcdepends(task):
+            for dep in task_deps['mcdepends'][task].split():
+                if len(dep.split(':')) != 5:
+                    bb.msg.fatal("TaskData", "Error for %s:%s[%s], multiconfig dependency %s does not contain exactly four  ':' characters.\n Task '%s' should be specified in the form 'multiconfig:fromMC:toMC:packagename:task'" % (fn, task, 'mcdepends', dep, 'mcdepends'))
+                if dep not in self.mcdepends:
+                    self.mcdepends.append(dep)
+
         # Common code for dep_name/depends = 'depends'/idepends and 'rdepends'/irdepends
         def handle_deps(task, dep_name, depends, seen):
             if dep_name in task_deps and task in task_deps[dep_name]:
@@ -110,16 +119,20 @@
             parentids = []
             for dep in task_deps['parents'][task]:
                 if dep not in task_deps['tasks']:
-                    bb.debug(2, "Not adding dependeny of %s on %s since %s does not exist" % (task, dep, dep))
+                    bb.debug(2, "Not adding dependency of %s on %s since %s does not exist" % (task, dep, dep))
                     continue
                 parentid = "%s:%s" % (fn, dep)
                 parentids.append(parentid)
             self.taskentries[tid].tdepends.extend(parentids)
 
+
             # Touch all intertask dependencies
             handle_deps(task, 'depends', self.taskentries[tid].idepends, self.seen_build_target)
             handle_deps(task, 'rdepends', self.taskentries[tid].irdepends, self.seen_run_target)
 
+            if 'mcdepends' in task_deps and task in task_deps['mcdepends']:
+                add_mcdepends(task)
+
         # Work out build dependencies
         if not fn in self.depids:
             dependids = set()
@@ -537,6 +550,9 @@
                     provmap[name] = provider[0]
         return provmap
 
+    def get_mcdepends(self):
+        return self.mcdepends
+
     def dump_data(self):
         """
         Dump some debug information on the internal data structures
diff --git a/poky/bitbake/lib/bb/tests/cooker.py b/poky/bitbake/lib/bb/tests/cooker.py
new file mode 100644
index 0000000..2b44236
--- /dev/null
+++ b/poky/bitbake/lib/bb/tests/cooker.py
@@ -0,0 +1,83 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# BitBake Tests for cooker.py
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+
+import unittest
+import tempfile
+import os
+import bb, bb.cooker
+import re
+import logging
+
+# Cooker tests
+class CookerTest(unittest.TestCase):
+    def setUp(self):
+        # At least one variable needs to be set
+        self.d = bb.data.init()
+        topdir = os.path.join(os.path.dirname(os.path.realpath(__file__)), "testdata/cooker")
+        self.d.setVar('TOPDIR', topdir)
+
+    def test_CookerCollectFiles_sublayers(self):
+        '''Test that a sublayer of an existing layer does not trigger
+           No bb files matched ...'''
+
+        def append_collection(topdir, path, d):
+            collection = path.split('/')[-1]
+            pattern = "^" + topdir + "/" + path + "/"
+            regex = re.compile(pattern)
+            priority = 5
+
+            d.setVar('BBFILE_COLLECTIONS', (d.getVar('BBFILE_COLLECTIONS') or "") + " " + collection)
+            d.setVar('BBFILE_PATTERN_%s' % (collection), pattern)
+            d.setVar('BBFILE_PRIORITY_%s' % (collection), priority)
+
+            return (collection, pattern, regex, priority)
+
+        topdir = self.d.getVar("TOPDIR")
+
+        # Priorities: list of (collection, pattern, regex, priority)
+        bbfile_config_priorities = []
+        # Order is important for this test, shortest to longest is typical failure case
+        bbfile_config_priorities.append( append_collection(topdir, 'first', self.d) )
+        bbfile_config_priorities.append( append_collection(topdir, 'second', self.d) )
+        bbfile_config_priorities.append( append_collection(topdir, 'second/third', self.d) )
+
+        pkgfns = [ topdir + '/first/recipes/sample1_1.0.bb',
+                   topdir + '/second/recipes/sample2_1.0.bb',
+                   topdir + '/second/third/recipes/sample3_1.0.bb' ]
+
+        class LogHandler(logging.Handler):
+            def __init__(self):
+                logging.Handler.__init__(self)
+                self.logdata = []
+
+            def emit(self, record):
+                self.logdata.append(record.getMessage())
+
+        # Move cooker to use my special logging
+        logger = bb.cooker.logger
+        log_handler = LogHandler()
+        logger.addHandler(log_handler)
+        collection = bb.cooker.CookerCollectFiles(bbfile_config_priorities)
+        collection.collection_priorities(pkgfns, self.d)
+        logger.removeHandler(log_handler)
+
+        # Should be empty (no generated messages)
+        expected = []
+
+        self.assertEqual(log_handler.logdata, expected)
diff --git a/poky/bitbake/lib/bb/tests/data.py b/poky/bitbake/lib/bb/tests/data.py
index a4a9dd3..db3e201 100644
--- a/poky/bitbake/lib/bb/tests/data.py
+++ b/poky/bitbake/lib/bb/tests/data.py
@@ -281,7 +281,7 @@
     def test_remove(self):
         self.d.setVar("TEST", "${VAL} ${BAR}")
         self.d.setVar("TEST_remove", "val")
-        self.assertEqual(self.d.getVar("TEST"), "bar")
+        self.assertEqual(self.d.getVar("TEST"), " bar")
 
     def test_remove_cleared(self):
         self.d.setVar("TEST", "${VAL} ${BAR}")
@@ -300,7 +300,7 @@
         self.d.setVar("TEST", "${VAL} ${BAR}")
         self.d.setVar("TEST_remove", "val")
         self.d.setVar("TEST_TEST", "${TEST} ${TEST}")
-        self.assertEqual(self.d.getVar("TEST_TEST"), "bar bar")
+        self.assertEqual(self.d.getVar("TEST_TEST"), " bar  bar")
 
     def test_empty_remove(self):
         self.d.setVar("TEST", "")
@@ -311,13 +311,25 @@
         self.d.setVar("BAR", "Z")
         self.d.setVar("TEST", "${BAR}/X Y")
         self.d.setVar("TEST_remove", "${BAR}/X")
-        self.assertEqual(self.d.getVar("TEST"), "Y")
+        self.assertEqual(self.d.getVar("TEST"), " Y")
 
     def test_remove_expansion_items(self):
         self.d.setVar("TEST", "A B C D")
         self.d.setVar("BAR", "B D")
         self.d.setVar("TEST_remove", "${BAR}")
-        self.assertEqual(self.d.getVar("TEST"), "A C")
+        self.assertEqual(self.d.getVar("TEST"), "A  C ")
+
+    def test_remove_preserve_whitespace(self):
+        # When the removal isn't active, the original value should be preserved
+        self.d.setVar("TEST", " A B")
+        self.d.setVar("TEST_remove", "C")
+        self.assertEqual(self.d.getVar("TEST"), " A B")
+
+    def test_remove_preserve_whitespace2(self):
+        # When the removal is active preserve the whitespace
+        self.d.setVar("TEST", " A B")
+        self.d.setVar("TEST_remove", "B")
+        self.assertEqual(self.d.getVar("TEST"), " A ")
 
 class TestOverrides(unittest.TestCase):
     def setUp(self):
@@ -374,6 +386,15 @@
         self.d.setVar("OVERRIDES", "foo:bar:some_val")
         self.assertEqual(self.d.getVar("TEST"), "testvalue3")
 
+    def test_remove_with_override(self):
+        self.d.setVar("TEST_bar", "testvalue2")
+        self.d.setVar("TEST_some_val", "testvalue3 testvalue5")
+        self.d.setVar("TEST_some_val_remove", "testvalue3")
+        self.d.setVar("TEST_foo", "testvalue4")
+        self.d.setVar("OVERRIDES", "foo:bar:some_val")
+        self.assertEqual(self.d.getVar("TEST"), " testvalue5")
+
+
 class TestKeyExpansion(unittest.TestCase):
     def setUp(self):
         self.d = bb.data.init()
@@ -443,6 +464,54 @@
         self.assertFalse(bb.utils.contains_any("SOMEFLAG", "x y z", True, False, self.d))
 
 
+class TaskHash(unittest.TestCase):
+    def test_taskhashes(self):
+        def gettask_bashhash(taskname, d):
+            tasklist, gendeps, lookupcache = bb.data.generate_dependencies(d)
+            taskdeps, basehash = bb.data.generate_dependency_hash(tasklist, gendeps, lookupcache, set(), "somefile")
+            bb.warn(str(lookupcache))
+            return basehash["somefile." + taskname]
+
+        d = bb.data.init()
+        d.setVar("__BBTASKS", ["mytask"])
+        d.setVar("__exportlist", [])
+        d.setVar("mytask", "${MYCOMMAND}")
+        d.setVar("MYCOMMAND", "${VAR}; foo; bar; exit 0")
+        d.setVar("VAR", "val")
+        orighash = gettask_bashhash("mytask", d)
+
+        # Changing a variable should change the hash
+        d.setVar("VAR", "val2")
+        nexthash = gettask_bashhash("mytask", d)
+        self.assertNotEqual(orighash, nexthash)
+
+        d.setVar("VAR", "val")
+        # Adding an inactive removal shouldn't change the hash
+        d.setVar("BAR", "notbar")
+        d.setVar("MYCOMMAND_remove", "${BAR}")
+        nexthash = gettask_bashhash("mytask", d)
+        self.assertEqual(orighash, nexthash)
+
+        # Adding an active removal should change the hash
+        d.setVar("BAR", "bar;")
+        nexthash = gettask_bashhash("mytask", d)
+        self.assertNotEqual(orighash, nexthash)
+
+        # Setup an inactive contains()
+        d.setVar("VAR", "${@bb.utils.contains('VAR2', 'A', 'val', '', d)}")
+        orighash = gettask_bashhash("mytask", d)
+
+        # Activate the contains() and the hash should change
+        d.setVar("VAR2", "A")
+        nexthash = gettask_bashhash("mytask", d)
+        self.assertNotEqual(orighash, nexthash)
+
+        # The contains should be inactive but even though VAR2 has a
+        # different value the hash should match the original
+        d.setVar("VAR2", "B")
+        nexthash = gettask_bashhash("mytask", d)
+        self.assertEqual(orighash, nexthash)
+
 class Serialize(unittest.TestCase):
 
     def test_serialize(self):
diff --git a/poky/bitbake/lib/bb/tests/fetch.py b/poky/bitbake/lib/bb/tests/fetch.py
index 68eb388..6848095 100644
--- a/poky/bitbake/lib/bb/tests/fetch.py
+++ b/poky/bitbake/lib/bb/tests/fetch.py
@@ -402,6 +402,12 @@
             : "git://somewhere.org/somedir/mtd-utils.git;tag=1234567890123456789012345678901234567890;protocol=http", 
         ("git://git.invalid.infradead.org/foo/mtd-utils.git;tag=1234567890123456789012345678901234567890", "git://.*/.*", "git://somewhere.org/somedir/MIRRORNAME;protocol=http") 
             : "git://somewhere.org/somedir/git.invalid.infradead.org.foo.mtd-utils.git;tag=1234567890123456789012345678901234567890;protocol=http", 
+        ("http://somewhere.org/somedir1/somedir2/somefile_1.2.3.tar.gz", "http://.*/.*", "http://somewhere2.org")
+            : "http://somewhere2.org/somefile_1.2.3.tar.gz",
+        ("http://somewhere.org/somedir1/somedir2/somefile_1.2.3.tar.gz", "http://.*/.*", "http://somewhere2.org/")
+            : "http://somewhere2.org/somefile_1.2.3.tar.gz",
+        ("git://someserver.org/bitbake;tag=1234567890123456789012345678901234567890;branch=master", "git://someserver.org/bitbake;branch=master", "git://git.openembedded.org/bitbake;protocol=http")
+            : "git://git.openembedded.org/bitbake;tag=1234567890123456789012345678901234567890;branch=master;protocol=http",
 
         #Renaming files doesn't work
         #("http://somewhere.org/somedir1/somefile_1.2.3.tar.gz", "http://somewhere.org/somedir1/somefile_1.2.3.tar.gz", "http://somewhere2.org/somedir3/somefile_2.3.4.tar.gz") : "http://somewhere2.org/somedir3/somefile_2.3.4.tar.gz"
@@ -457,6 +463,124 @@
                                 'https://BBBB/B/B/B/bitbake/bitbake-1.0.tar.gz',
                                 'http://AAAA/A/A/A/B/B/bitbake/bitbake-1.0.tar.gz'])
 
+
+class GitDownloadDirectoryNamingTest(FetcherTest):
+    def setUp(self):
+        super(GitDownloadDirectoryNamingTest, self).setUp()
+        self.recipe_url = "git://git.openembedded.org/bitbake"
+        self.recipe_dir = "git.openembedded.org.bitbake"
+        self.mirror_url = "git://github.com/openembedded/bitbake.git"
+        self.mirror_dir = "github.com.openembedded.bitbake.git"
+
+        self.d.setVar('SRCREV', '82ea737a0b42a8b53e11c9cde141e9e9c0bd8c40')
+
+    def setup_mirror_rewrite(self):
+        self.d.setVar("PREMIRRORS", self.recipe_url + " " + self.mirror_url + " \n")
+
+    @skipIfNoNetwork()
+    def test_that_directory_is_named_after_recipe_url_when_no_mirroring_is_used(self):
+        self.setup_mirror_rewrite()
+        fetcher = bb.fetch.Fetch([self.recipe_url], self.d)
+
+        fetcher.download()
+
+        dir = os.listdir(self.dldir + "/git2")
+        self.assertIn(self.recipe_dir, dir)
+
+    @skipIfNoNetwork()
+    def test_that_directory_exists_for_mirrored_url_and_recipe_url_when_mirroring_is_used(self):
+        self.setup_mirror_rewrite()
+        fetcher = bb.fetch.Fetch([self.recipe_url], self.d)
+
+        fetcher.download()
+
+        dir = os.listdir(self.dldir + "/git2")
+        self.assertIn(self.mirror_dir, dir)
+        self.assertIn(self.recipe_dir, dir)
+
+    @skipIfNoNetwork()
+    def test_that_recipe_directory_and_mirrored_directory_exists_when_mirroring_is_used_and_the_mirrored_directory_already_exists(self):
+        self.setup_mirror_rewrite()
+        fetcher = bb.fetch.Fetch([self.mirror_url], self.d)
+        fetcher.download()
+        fetcher = bb.fetch.Fetch([self.recipe_url], self.d)
+
+        fetcher.download()
+
+        dir = os.listdir(self.dldir + "/git2")
+        self.assertIn(self.mirror_dir, dir)
+        self.assertIn(self.recipe_dir, dir)
+
+
+class TarballNamingTest(FetcherTest):
+    def setUp(self):
+        super(TarballNamingTest, self).setUp()
+        self.recipe_url = "git://git.openembedded.org/bitbake"
+        self.recipe_tarball = "git2_git.openembedded.org.bitbake.tar.gz"
+        self.mirror_url = "git://github.com/openembedded/bitbake.git"
+        self.mirror_tarball = "git2_github.com.openembedded.bitbake.git.tar.gz"
+
+        self.d.setVar('BB_GENERATE_MIRROR_TARBALLS', '1')
+        self.d.setVar('SRCREV', '82ea737a0b42a8b53e11c9cde141e9e9c0bd8c40')
+
+    def setup_mirror_rewrite(self):
+        self.d.setVar("PREMIRRORS", self.recipe_url + " " + self.mirror_url + " \n")
+
+    @skipIfNoNetwork()
+    def test_that_the_recipe_tarball_is_created_when_no_mirroring_is_used(self):
+        fetcher = bb.fetch.Fetch([self.recipe_url], self.d)
+
+        fetcher.download()
+
+        dir = os.listdir(self.dldir)
+        self.assertIn(self.recipe_tarball, dir)
+
+    @skipIfNoNetwork()
+    def test_that_the_mirror_tarball_is_created_when_mirroring_is_used(self):
+        self.setup_mirror_rewrite()
+        fetcher = bb.fetch.Fetch([self.recipe_url], self.d)
+
+        fetcher.download()
+
+        dir = os.listdir(self.dldir)
+        self.assertIn(self.mirror_tarball, dir)
+
+
+class GitShallowTarballNamingTest(FetcherTest):
+    def setUp(self):
+        super(GitShallowTarballNamingTest, self).setUp()
+        self.recipe_url = "git://git.openembedded.org/bitbake"
+        self.recipe_tarball = "gitshallow_git.openembedded.org.bitbake_82ea737-1_master.tar.gz"
+        self.mirror_url = "git://github.com/openembedded/bitbake.git"
+        self.mirror_tarball = "gitshallow_github.com.openembedded.bitbake.git_82ea737-1_master.tar.gz"
+
+        self.d.setVar('BB_GIT_SHALLOW', '1')
+        self.d.setVar('BB_GENERATE_SHALLOW_TARBALLS', '1')
+        self.d.setVar('SRCREV', '82ea737a0b42a8b53e11c9cde141e9e9c0bd8c40')
+
+    def setup_mirror_rewrite(self):
+        self.d.setVar("PREMIRRORS", self.recipe_url + " " + self.mirror_url + " \n")
+
+    @skipIfNoNetwork()
+    def test_that_the_tarball_is_named_after_recipe_url_when_no_mirroring_is_used(self):
+        fetcher = bb.fetch.Fetch([self.recipe_url], self.d)
+
+        fetcher.download()
+
+        dir = os.listdir(self.dldir)
+        self.assertIn(self.recipe_tarball, dir)
+
+    @skipIfNoNetwork()
+    def test_that_the_mirror_tarball_is_created_when_mirroring_is_used(self):
+        self.setup_mirror_rewrite()
+        fetcher = bb.fetch.Fetch([self.recipe_url], self.d)
+
+        fetcher.download()
+
+        dir = os.listdir(self.dldir)
+        self.assertIn(self.mirror_tarball, dir)
+
+
 class FetcherLocalTest(FetcherTest):
     def setUp(self):
         def touch(fn):
@@ -745,27 +869,27 @@
         self.assertRaises(bb.fetch.ParameterError, self.gitfetcher, url, url)
 
     @skipIfNoNetwork()
-    def test_gitfetch_premirror(self):
-        url1 = "git://git.openembedded.org/bitbake"
-        url2 = "git://someserver.org/bitbake"
+    def test_gitfetch_finds_local_tarball_for_mirrored_url_when_previous_downloaded_by_the_recipe_url(self):
+        recipeurl = "git://git.openembedded.org/bitbake"
+        mirrorurl = "git://someserver.org/bitbake"
         self.d.setVar("PREMIRRORS", "git://someserver.org/bitbake git://git.openembedded.org/bitbake \n")
-        self.gitfetcher(url1, url2)
+        self.gitfetcher(recipeurl, mirrorurl)
 
     @skipIfNoNetwork()
-    def test_gitfetch_premirror2(self):
-        url1 = url2 = "git://someserver.org/bitbake"
+    def test_gitfetch_finds_local_tarball_when_previous_downloaded_from_a_premirror(self):
+        recipeurl = "git://someserver.org/bitbake"
         self.d.setVar("PREMIRRORS", "git://someserver.org/bitbake git://git.openembedded.org/bitbake \n")
-        self.gitfetcher(url1, url2)
+        self.gitfetcher(recipeurl, recipeurl)
 
     @skipIfNoNetwork()
-    def test_gitfetch_premirror3(self):
+    def test_gitfetch_finds_local_repository_when_premirror_rewrites_the_recipe_url(self):
         realurl = "git://git.openembedded.org/bitbake"
-        dummyurl = "git://someserver.org/bitbake"
+        recipeurl = "git://someserver.org/bitbake"
         self.sourcedir = self.unpackdir.replace("unpacked", "sourcemirror.git")
         os.chdir(self.tempdir)
         bb.process.run("git clone %s %s 2> /dev/null" % (realurl, self.sourcedir), shell=True)
-        self.d.setVar("PREMIRRORS", "%s git://%s;protocol=file \n" % (dummyurl, self.sourcedir))
-        self.gitfetcher(dummyurl, dummyurl)
+        self.d.setVar("PREMIRRORS", "%s git://%s;protocol=file \n" % (recipeurl, self.sourcedir))
+        self.gitfetcher(recipeurl, recipeurl)
 
     @skipIfNoNetwork()
     def test_git_submodule(self):
@@ -832,7 +956,7 @@
     # decodeurl and we need to handle them
     decodedata = datatable.copy()
     decodedata.update({
-       "http://somesite.net;someparam=1": ('http', 'somesite.net', '', '', '', {'someparam': '1'}),
+       "http://somesite.net;someparam=1": ('http', 'somesite.net', '/', '', '', {'someparam': '1'}),
     })
 
     def test_decodeurl(self):
@@ -861,12 +985,12 @@
         ("dtc", "git://git.qemu.org/dtc.git", "65cc4d2748a2c2e6f27f1cf39e07a5dbabd80ebf", "")
             : "1.4.0",
         # combination version pattern
-        ("sysprof", "git://gitlab.gnome.org/GNOME/sysprof;protocol=https", "cd44ee6644c3641507fb53b8a2a69137f2971219", "")
+        ("sysprof", "git://gitlab.gnome.org/GNOME/sysprof.git;protocol=https", "cd44ee6644c3641507fb53b8a2a69137f2971219", "")
             : "1.2.0",
         ("u-boot-mkimage", "git://git.denx.de/u-boot.git;branch=master;protocol=git", "62c175fbb8a0f9a926c88294ea9f7e88eb898f6c", "")
             : "2014.01",
         # version pattern "yyyymmdd"
-        ("mobile-broadband-provider-info", "git://gitlab.gnome.org/GNOME/mobile-broadband-provider-info;protocol=https", "4ed19e11c2975105b71b956440acdb25d46a347d", "")
+        ("mobile-broadband-provider-info", "git://gitlab.gnome.org/GNOME/mobile-broadband-provider-info.git;protocol=https", "4ed19e11c2975105b71b956440acdb25d46a347d", "")
             : "20120614",
         # packages with a valid UPSTREAM_CHECK_GITTAGREGEX
         ("xf86-video-omap", "git://anongit.freedesktop.org/xorg/driver/xf86-video-omap", "ae0394e687f1a77e966cf72f895da91840dffb8f", "(?P<pver>(\d+\.(\d\.?)*))")
@@ -1338,6 +1462,9 @@
         smdir = os.path.join(self.tempdir, 'gitsubmodule')
         bb.utils.mkdirhier(smdir)
         self.git('init', cwd=smdir)
+        # Make this look like it was cloned from a remote...
+        self.git('config --add remote.origin.url "%s"' % smdir, cwd=smdir)
+        self.git('config --add remote.origin.fetch "+refs/heads/*:refs/remotes/origin/*"', cwd=smdir)
         self.add_empty_file('asub', cwd=smdir)
 
         self.git('submodule init', cwd=self.srcdir)
@@ -1571,3 +1698,29 @@
         self.assertNotEqual(orig_revs, revs)
         self.assertRefs(['master', 'origin/master'])
         self.assertRevCount(orig_revs - 1758)
+
+    def test_that_unpack_throws_an_error_when_the_git_clone_nor_shallow_tarball_exist(self):
+        self.add_empty_file('a')
+        fetcher, ud = self.fetch()
+        bb.utils.remove(self.gitdir, recurse=True)
+        bb.utils.remove(self.dldir, recurse=True)
+
+        with self.assertRaises(bb.fetch2.UnpackError) as context:
+            fetcher.unpack(self.d.getVar('WORKDIR'))
+
+        self.assertIn("No up to date source found", context.exception.msg)
+        self.assertIn("clone directory not available or not up to date", context.exception.msg)
+
+    @skipIfNoNetwork()
+    def test_that_unpack_does_work_when_using_git_shallow_tarball_but_tarball_is_not_available(self):
+        self.d.setVar('SRCREV', 'e5939ff608b95cdd4d0ab0e1935781ab9a276ac0')
+        self.d.setVar('BB_GIT_SHALLOW', '1')
+        self.d.setVar('BB_GENERATE_SHALLOW_TARBALLS', '1')
+        fetcher = bb.fetch.Fetch(["git://git.yoctoproject.org/fstests"], self.d)
+        fetcher.download()
+
+        bb.utils.remove(self.dldir + "/*.tar.gz")
+        fetcher.unpack(self.unpackdir)
+
+        dir = os.listdir(self.unpackdir + "/git/")
+        self.assertIn("fstests.doap", dir)
diff --git a/poky/bitbake/lib/bb/tests/parse.py b/poky/bitbake/lib/bb/tests/parse.py
index 8f16ba4..1bc4740 100644
--- a/poky/bitbake/lib/bb/tests/parse.py
+++ b/poky/bitbake/lib/bb/tests/parse.py
@@ -44,9 +44,13 @@
 """
 
     def setUp(self):
+        self.origdir = os.getcwd()
         self.d = bb.data.init()
         bb.parse.siggen = bb.siggen.init(self.d)
 
+    def tearDown(self):
+        os.chdir(self.origdir)
+
     def parsehelper(self, content, suffix = ".bb"):
 
         f = tempfile.NamedTemporaryFile(suffix = suffix)
diff --git a/poky/bitbake/lib/bb/ui/buildinfohelper.py b/poky/bitbake/lib/bb/ui/buildinfohelper.py
index 524a5b0..31323d2 100644
--- a/poky/bitbake/lib/bb/ui/buildinfohelper.py
+++ b/poky/bitbake/lib/bb/ui/buildinfohelper.py
@@ -1603,14 +1603,14 @@
         mockevent.lineno = -1
         self.store_log_event(mockevent)
 
-    def store_log_event(self, event):
+    def store_log_event(self, event,cli_backlog=True):
         self._ensure_build()
 
         if event.levelno < formatter.WARNING:
             return
 
         # early return for CLI builds
-        if self.brbe is None:
+        if cli_backlog and self.brbe is None:
             if not 'backlog' in self.internal_state:
                 self.internal_state['backlog'] = []
             self.internal_state['backlog'].append(event)
@@ -1622,7 +1622,7 @@
                 tempevent = self.internal_state['backlog'].pop()
                 logger.debug(1, "buildinfohelper: Saving stored event %s "
                              % tempevent)
-                self.store_log_event(tempevent)
+                self.store_log_event(tempevent,cli_backlog)
             else:
                 logger.info("buildinfohelper: All events saved")
                 del self.internal_state['backlog']
@@ -1987,7 +1987,8 @@
         if 'backlog' in self.internal_state:
             # we save missed events in the database for the current build
             tempevent = self.internal_state['backlog'].pop()
-            self.store_log_event(tempevent)
+            # Do not skip command line build events
+            self.store_log_event(tempevent,False)
 
         if not connection.features.autocommits_when_autocommit_is_off:
             transaction.set_autocommit(True)
diff --git a/poky/bitbake/lib/bb/ui/taskexp.py b/poky/bitbake/lib/bb/ui/taskexp.py
index 0e8e9d4..8305d70 100644
--- a/poky/bitbake/lib/bb/ui/taskexp.py
+++ b/poky/bitbake/lib/bb/ui/taskexp.py
@@ -103,9 +103,16 @@
         self.pkg_treeview.get_selection().connect("changed", self.on_cursor_changed)
         column = Gtk.TreeViewColumn("Package", Gtk.CellRendererText(), text=COL_PKG_NAME)
         self.pkg_treeview.append_column(column)
-        pane.add1(scrolled)
         scrolled.add(self.pkg_treeview)
 
+        self.search_entry = Gtk.SearchEntry.new()
+        self.pkg_treeview.set_search_entry(self.search_entry)
+
+        left_panel = Gtk.VPaned()
+        left_panel.add(self.search_entry)
+        left_panel.add(scrolled)
+        pane.add1(left_panel)
+
         box = Gtk.VBox(homogeneous=True, spacing=4)
 
         # Task Depends
@@ -129,6 +136,7 @@
         pane.add2(box)
 
         self.show_all()
+        self.search_entry.grab_focus()
 
     def on_package_activated(self, treeview, path, column, data_col):
         model = treeview.get_model()
diff --git a/poky/bitbake/lib/bb/utils.py b/poky/bitbake/lib/bb/utils.py
index 2ff7e82..73b6cb4 100644
--- a/poky/bitbake/lib/bb/utils.py
+++ b/poky/bitbake/lib/bb/utils.py
@@ -497,7 +497,11 @@
                 if statinfo.st_ino == statinfo2.st_ino:
                     return lf
             lf.close()
-        except Exception:
+        except OSError as e:
+            if e.errno == errno.EACCES:
+                logger.error("Unable to acquire lock '%s', %s",
+                             e.strerror, name)
+                sys.exit(1)
             try:
                 lf.close()
             except Exception:
@@ -906,6 +910,23 @@
         newmtime = sstat[stat.ST_MTIME]
     return newmtime
 
+def break_hardlinks(src, sstat = None):
+    """
+    Ensures src is the only hardlink to this file.  Other hardlinks,
+    if any, are not affected (other than in their st_nlink value, of
+    course).  Returns true on success and false on failure.
+
+    """
+    try:
+        if not sstat:
+            sstat = os.lstat(src)
+    except Exception as e:
+        logger.warning("break_hardlinks: stat of %s failed (%s)" % (src, e))
+        return False
+    if sstat[stat.ST_NLINK] == 1:
+        return True
+    return copyfile(src, src, sstat=sstat)
+
 def which(path, item, direction = 0, history = False, executable=False):
     """
     Locate `item` in the list of paths `path` (colon separated string like $PATH).
@@ -1290,7 +1311,7 @@
     return updated
 
 
-def edit_bblayers_conf(bblayers_conf, add, remove):
+def edit_bblayers_conf(bblayers_conf, add, remove, edit_cb=None):
     """Edit bblayers.conf, adding and/or removing layers
     Parameters:
         bblayers_conf: path to bblayers.conf file to edit
@@ -1298,6 +1319,8 @@
             list to add nothing
         remove: layer path (or list of layer paths) to remove; None or
             empty list to remove nothing
+        edit_cb: optional callback function that will be called after
+            processing adds/removes once per existing entry.
     Returns a tuple:
         notadded: list of layers specified to be added but weren't
             (because they were already in the list)
@@ -1361,6 +1384,17 @@
                     bblayers.append(addlayer)
             del addlayers[:]
 
+        if edit_cb:
+            newlist = []
+            for layer in bblayers:
+                res = edit_cb(layer, canonicalise_path(layer))
+                if res != layer:
+                    newlist.append(res)
+                    updated = True
+                else:
+                    newlist.append(layer)
+            bblayers = newlist
+
         if updated:
             if op == '+=' and not bblayers:
                 bblayers = None