meta-openembedded and poky: subtree updates

Squash of the following due to dependencies among them
and OpenBMC changes:

meta-openembedded: subtree update:d0748372d2..9201611135
meta-openembedded: subtree update:9201611135..17fd382f34
poky: subtree update:9052e5b32a..2e11d97b6c
poky: subtree update:2e11d97b6c..a8544811d7

The change log was too large for the jenkins plugin
to handle therefore it has been removed. Here is
the first and last commit of each subtree:

meta-openembedded:d0748372d2
      cppzmq: bump to version 4.6.0
meta-openembedded:17fd382f34
      mpv: Remove X11 dependency
poky:9052e5b32a
      package_ipk: Remove pointless comment to trigger rebuild
poky:a8544811d7
      pbzip2: Fix license warning

Change-Id: If0fc6c37629642ee207a4ca2f7aa501a2c673cd6
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/poky/bitbake/lib/bb/fetch2/git.py b/poky/bitbake/lib/bb/fetch2/git.py
index fa41b07..5b3793a 100644
--- a/poky/bitbake/lib/bb/fetch2/git.py
+++ b/poky/bitbake/lib/bb/fetch2/git.py
@@ -594,7 +594,9 @@
         """
         Return a unique key for the url
         """
-        return "git:" + ud.host + ud.path.replace('/', '.') + ud.unresolvedrev[name]
+        # Collapse adjacent slashes
+        slash_re = re.compile(r"/+")
+        return "git:" + ud.host + slash_re.sub(".", ud.path) + ud.unresolvedrev[name]
 
     def _lsremote(self, ud, d, search):
         """
@@ -671,7 +673,7 @@
 
             # search for version in the line
             tag = tagregex.search(tag_head)
-            if tag == None:
+            if tag is None:
                 continue
 
             tag = tag.group('pver')