Repair any mis-directed android-1.0 annotated tags

The initial open source release of the Android 1.0 platform had
some problems with its Perforce->Git imports.  Google was forced
to rewrite some history to redirect users onto more stable upstream
sources and correct errors in the imports.

Not everyone has the correct android-1.0 tags, as some users did
manage to fetch the platform early, before the mirror sites crashed
and the history was rewritten.

This change is a band-aid to ensure any stale android-1.0 tags are
get updated to the corrected version.  It should be backed out at
some point in the near future, when we can be fairly certain that
everyone has the correct android-1.0 tags.

Signed-off-by: Shawn O. Pearce <sop@google.com>

project.py

@@ -470,6 +470,7 @@ class Project(object):
       return False
     if not self._RemoteFetch():
       return False
+    self._RepairAndroidImportErrors()
     self._InitMRef()
     return True
     
@@ -477,6 +478,30 @@ class Project(object):
     for file in self.copyfiles:
       file._Copy()
 
+  def _RepairAndroidImportErrors(self):
+    if self.name in ['platform/external/iptables',
+                     'platform/external/libpcap',
+                     'platform/external/tcpdump',
+                     'platform/external/webkit',
+                     'platform/system/wlan/ti']:
+      # I hate myself for doing this...
+      #
+      # In the initial Android 1.0 release these projects were
+      # shipped, some users got them, and then the history had
+      # to be rewritten to correct problems with their imports.
+      # The 'android-1.0' tag may still be pointing at the old
+      # history, so we need to drop the tag and fetch it again.
+      #
+      try:
+        remote = self.GetRemote(self.remote.name)
+        relname = remote.ToLocal(R_HEADS + 'release-1.0')
+        tagname = R_TAGS + 'android-1.0'
+        if self._revlist(not_rev(relname), tagname):
+          cmd = ['fetch', remote.name, '+%s:%s' % (tagname, tagname)]
+          GitCommand(self, cmd, bare = True).Wait()
+      except GitError:
+        pass
+
   def Sync_LocalHalf(self):
     """Perform only the local IO portion of the sync process.
        Network access is not required.