diff --git a/yocto-poky/bitbake/lib/bb/runqueue.py b/yocto-poky/bitbake/lib/bb/runqueue.py
index 878028a..e1b9b2e 100644
--- a/yocto-poky/bitbake/lib/bb/runqueue.py
+++ b/yocto-poky/bitbake/lib/bb/runqueue.py
@@ -261,6 +261,13 @@
         taskname = self.runq_task[task] + task_name_suffix
         return "%s, %s" % (fn, taskname)
 
+    def get_short_user_idstring(self, task, task_name_suffix = ""):
+        fn = self.taskData.fn_index[self.runq_fnid[task]]
+        pn = self.dataCache.pkg_fn[fn]
+        taskname = self.runq_task[task] + task_name_suffix
+        return "%s:%s" % (pn, taskname)
+
+
     def get_task_id(self, fnid, taskname):
         for listid in xrange(len(self.runq_fnid)):
             if self.runq_fnid[listid] == fnid and self.runq_task[listid] == taskname:
@@ -634,23 +641,33 @@
 
             fnid = taskData.build_targets[targetid][0]
             fn = taskData.fn_index[fnid]
-            self.target_pairs.append((fn, target[1]))
+            task = target[1]
+            parents = False
+            if task.endswith('-'):
+                parents = True
+                task = task[:-1]
+
+            self.target_pairs.append((fn, task))
 
             if fnid in taskData.failed_fnids:
                 continue
 
-            if target[1] not in taskData.tasks_lookup[fnid]:
+            if task not in taskData.tasks_lookup[fnid]:
                 import difflib
-                close_matches = difflib.get_close_matches(target[1], taskData.tasks_lookup[fnid], cutoff=0.7)
+                close_matches = difflib.get_close_matches(task, taskData.tasks_lookup[fnid], cutoff=0.7)
                 if close_matches:
                     extra = ". Close matches:\n  %s" % "\n  ".join(close_matches)
                 else:
                     extra = ""
-                bb.msg.fatal("RunQueue", "Task %s does not exist for target %s%s" % (target[1], target[0], extra))
-
-            listid = taskData.tasks_lookup[fnid][target[1]]
-
-            mark_active(listid, 1)
+                bb.msg.fatal("RunQueue", "Task %s does not exist for target %s%s" % (task, target[0], extra))
+  
+            # For tasks called "XXXX-", ony run their dependencies
+            listid = taskData.tasks_lookup[fnid][task]
+            if parents:
+                for i in self.runq_depends[listid]:
+                    mark_active(i, 1)
+            else:
+                mark_active(listid, 1)
 
         # Step C - Prune all inactive tasks
         #
@@ -743,11 +760,72 @@
                         seen_pn.append(pn)
                     else:
                         bb.fatal("Multiple versions of %s are due to be built (%s). Only one version of a given PN should be built in any given build. You likely need to set PREFERRED_VERSION_%s to select the correct version or don't depend on multiple versions." % (pn, " ".join(prov_list[prov]), pn))
-                msg = "Multiple .bb files are due to be built which each provide %s (%s)." % (prov, " ".join(prov_list[prov]))
+                msg = "Multiple .bb files are due to be built which each provide %s:\n  %s" % (prov, "\n  ".join(prov_list[prov]))
+                #
+                # Construct a list of things which uniquely depend on each provider
+                # since this may help the user figure out which dependency is triggering this warning
+                #
+                msg += "\nA list of tasks depending on these providers is shown and may help explain where the dependency comes from."
+                deplist = {}
+                commondeps = None
+                for provfn in prov_list[prov]:
+                    deps = set()
+                    for task, fnid in enumerate(self.runq_fnid):
+                        fn = taskData.fn_index[fnid]
+                        if fn != provfn:
+                            continue
+                        for dep in self.runq_revdeps[task]:
+                            fn = taskData.fn_index[self.runq_fnid[dep]]
+                            if fn == provfn:
+                                continue
+                            deps.add(self.get_short_user_idstring(dep))
+                    if not commondeps:
+                        commondeps = set(deps)
+                    else:
+                        commondeps &= deps
+                    deplist[provfn] = deps
+                for provfn in deplist:
+                    msg += "\n%s has unique dependees:\n  %s" % (provfn, "\n  ".join(deplist[provfn] - commondeps))
+                #
+                # Construct a list of provides and runtime providers for each recipe
+                # (rprovides has to cover RPROVIDES, PACKAGES, PACKAGES_DYNAMIC)
+                #
+                msg += "\nIt could be that one recipe provides something the other doesn't and should. The following provider and runtime provider differences may be helpful."
+                provide_results = {}
+                rprovide_results = {}
+                commonprovs = None
+                commonrprovs = None
+                for provfn in prov_list[prov]:
+                    provides = set(self.dataCache.fn_provides[provfn])
+                    rprovides = set()
+                    for rprovide in self.dataCache.rproviders:
+                        if provfn in self.dataCache.rproviders[rprovide]:
+                            rprovides.add(rprovide)
+                    for package in self.dataCache.packages:
+                        if provfn in self.dataCache.packages[package]:
+                            rprovides.add(package)
+                    for package in self.dataCache.packages_dynamic:
+                        if provfn in self.dataCache.packages_dynamic[package]:
+                            rprovides.add(package)
+                    if not commonprovs:
+                        commonprovs = set(provides)
+                    else:
+                        commonprovs &= provides
+                    provide_results[provfn] = provides
+                    if not commonrprovs:
+                        commonrprovs = set(rprovides)
+                    else:
+                        commonrprovs &= rprovides
+                    rprovide_results[provfn] = rprovides
+                #msg += "\nCommon provides:\n  %s" % ("\n  ".join(commonprovs))
+                #msg += "\nCommon rprovides:\n  %s" % ("\n  ".join(commonrprovs))
+                for provfn in prov_list[prov]:
+                    msg += "\n%s has unique provides:\n  %s" % (provfn, "\n  ".join(provide_results[provfn] - commonprovs))
+                    msg += "\n%s has unique rprovides:\n  %s" % (provfn, "\n  ".join(rprovide_results[provfn] - commonrprovs))
+
                 if self.warn_multi_bb:
                     logger.warn(msg)
                 else:
-                    msg += "\n This usually means one provides something the other doesn't and should."
                     logger.error(msg)
 
         # Create a whitelist usable by the stamp checks
@@ -798,7 +876,7 @@
                     invalidate_task(fn, st, True)
 
         # Create and print to the logs a virtual/xxxx -> PN (fn) table
-        virtmap = taskData.get_providermap()
+        virtmap = taskData.get_providermap(prefix="virtual/")
         virtpnmap = {}
         for v in virtmap:
             virtpnmap[v] = self.dataCache.pkg_fn[virtmap[v]]
@@ -819,6 +897,7 @@
                         procdep.append(self.taskData.fn_index[self.runq_fnid[dep]] + "." + self.runq_task[dep])
                     self.runq_hash[task] = bb.parse.siggen.get_taskhash(self.taskData.fn_index[self.runq_fnid[task]], self.runq_task[task], procdep, self.dataCache)
 
+        bb.parse.siggen.writeout_file_checksum_cache()
         return len(self.runq_fnid)
 
     def dump_data(self, taskQueue):
@@ -874,6 +953,7 @@
         if self.cooker.configuration.profile:
             magic = "decafbadbad"
         if fakeroot:
+            magic = magic + "beef"
             fakerootcmd = self.cfgData.getVar("FAKEROOTCMD", True)
             fakerootenv = (self.cfgData.getVar("FAKEROOTBASEENV", True) or "").split()
             env = os.environ.copy()
@@ -1067,9 +1147,12 @@
             retval = self.rqexe.execute()
 
         if self.state is runQueueRunInit:
-            logger.info("Executing RunQueue Tasks")
-            self.rqexe = RunQueueExecuteTasks(self)
-            self.state = runQueueRunning
+            if self.cooker.configuration.setsceneonly:
+                self.state = runQueueComplete
+            else:
+                logger.info("Executing RunQueue Tasks")
+                self.rqexe = RunQueueExecuteTasks(self)
+                self.state = runQueueRunning
 
         if self.state is runQueueRunning:
             retval = self.rqexe.execute()
@@ -1388,7 +1471,7 @@
                 self.runq_buildable.append(1)
             else:
                 self.runq_buildable.append(0)
-            if len(self.rqdata.runq_revdeps[task]) > 0 and self.rqdata.runq_revdeps[task].issubset(self.rq.scenequeue_covered) and task not in self.rq.scenequeue_notcovered:
+            if len(self.rqdata.runq_revdeps[task]) > 0 and self.rqdata.runq_revdeps[task].issubset(self.rq.scenequeue_covered):
                 self.rq.scenequeue_covered.add(task)
 
         found = True
@@ -1399,7 +1482,7 @@
                     continue
                 logger.debug(1, 'Considering %s (%s): %s' % (task, self.rqdata.get_user_idstring(task), str(self.rqdata.runq_revdeps[task])))
 
-                if len(self.rqdata.runq_revdeps[task]) > 0 and self.rqdata.runq_revdeps[task].issubset(self.rq.scenequeue_covered) and task not in self.rq.scenequeue_notcovered:
+                if len(self.rqdata.runq_revdeps[task]) > 0 and self.rqdata.runq_revdeps[task].issubset(self.rq.scenequeue_covered):
                     found = True
                     self.rq.scenequeue_covered.add(task)
 
@@ -1708,6 +1791,7 @@
                 sq_revdeps_new[point] = set()
                 if point in self.rqdata.runq_setscene:
                     sq_revdeps_new[point] = tasks
+                    tasks = set()
                 for dep in self.rqdata.runq_depends[point]:
                     if point in sq_revdeps[dep]:
                         sq_revdeps[dep].remove(point)
@@ -2014,9 +2098,6 @@
         self.rq.scenequeue_covered = set()
         for task in oldcovered:
             self.rq.scenequeue_covered.add(self.rqdata.runq_setscene[task])
-        self.rq.scenequeue_notcovered = set()
-        for task in self.scenequeue_notcovered:
-            self.rq.scenequeue_notcovered.add(self.rqdata.runq_setscene[task])
 
         logger.debug(1, 'We can skip tasks %s', sorted(self.rq.scenequeue_covered))