Fix python scripts in src/webkit

webkit/support/setup_third_party.py

-#!/usr/bin/python
+#!/usr/bin/env python
 # Copyright (c) 2010 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """A helper script for setting up forwarding headers."""
 
 import errno
 import os
 import sys
 
@@ skipping 107 matching lines @@
     'outputs': Outputs,
     'setup_headers': SetupHeaders,
   }
   command = argv[1]
   args = argv[2:]
   return commands[command](args)
 
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv))