Fix merge-to-branch python port.

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 337 matching lines @@
     PrepareSVN,
     TagRevision,
     CleanUp,
   ]
 
   RunScript(step_classes, config, options, side_effect_handler)
 
 
 def BuildOptions():
   result = optparse.OptionParser()
+  result.set_usage("""%prog [OPTIONS]... [BRANCH] [REVISION]...
+
+Performs the necessary steps to merge revisions from bleeding_edge
+to other branches, including trunk.""")
   result.add_option("-f",
                     help="Delete sentinel file.",
                     default=False, action="store_true")
   result.add_option("-m", "--message",
                     help="Specify a commit message for the patch.")
   result.add_option("-r", "--revert",
                     help="Revert specified patches.",
                     default=False, action="store_true")
   result.add_option("-R", "--revert-bleeding-edge",
                     help="Revert specified patches from bleeding edge.",
@@ skipping 21 matching lines @@
     return False
   return True
 
 
 def Main():
   parser = BuildOptions()
   (options, args) = parser.parse_args()
   if not ProcessOptions(options, args):
     parser.print_help()
     return 1
-  RunMergeToBranch(CONFIG, MergeToBranchOptions(options))
+  RunMergeToBranch(CONFIG, MergeToBranchOptions(options, args))
 
 if __name__ == "__main__":
   sys.exit(Main())