Add tag write access to merge script.

tools/push-to-trunk/merge_to_branch.py

 #!/usr/bin/env python
 # Copyright 2014 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
@@ skipping 201 matching lines @@
     self.GitPresubmit()
     self.vc.CLLand()
 
 
 class TagRevision(Step):
   MESSAGE = "Create the tag."
 
   def RunStep(self):
     if self._options.revert_bleeding_edge:
       return
-    print "Creating tag svn/tags/%s" % self["version"]
+    print "Creating tag %s" % self["version"]
     self.vc.Tag(self["version"], self.vc.RemoteBranch(self["merge_to_branch"]))
 
 
 class CleanUp(Step):
   MESSAGE = "Cleanup."
 
   def RunStep(self):
     self.CommonCleanup()
     if not self._options.revert_bleeding_edge:
       print "*** SUMMARY ***"
@@ skipping 63 matching lines @@
       CommitLocal,
       UploadStep,
       CommitRepository,
       TagRevision,
       CleanUp,
     ]
 
 
 if __name__ == "__main__":  # pragma: no cover
   sys.exit(MergeToBranch().Run())