Turn on git diff copy detection for git-cl upload.

third_party/upload.py

 #!/usr/bin/env python
 # coding: utf-8
 #
 # Copyright 2007 Google Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
@@ skipping 1288 matching lines @@
     # -M/-C will not print the diff for the deleted file when a file is renamed.
     # This is confusing because the original file will not be shown on the
     # review when a file is renamed. So first get the diff of all deleted files,
     # then the diff of everything except deleted files with rename and copy
     # support enabled.
     cmd = [
         "git", "diff", "--no-color", "--no-ext-diff", "--full-index", "--ignore-submodules"
     ]
     diff = RunShell(cmd + ["--diff-filter=D"] + extra_args, env=env,
         silent_ok=True)
-    diff += RunShell(cmd + ["-C", "--diff-filter=ACMRT"] + extra_args, env=env,
+    diff += RunShell(cmd + ["-C", "-C", "--diff-filter=ACMRT"] + extra_args, env=env,

[M-A Ruel, 2012/06/11 00:01:59]

This needs to happen upstream first.

         silent_ok=True)
     if not diff:
       ErrorExit("No output from %s" % (cmd + extra_args))
     return diff
 
   def GetUnknownFiles(self):
     status = RunShell(["git", "ls-files", "--exclude-standard", "--others"],
                       silent_ok=True)
     return status.splitlines()
 
@@ skipping 1024 matching lines @@
     os.environ['LC_ALL'] = 'C'
     RealMain(sys.argv)
   except KeyboardInterrupt:
     print
     StatusUpdate("Interrupted.")
     sys.exit(1)
 
 
 if __name__ == "__main__":
   main()