Fix many* python scripts in src/

chrome_frame/combine_libs.py

-# Copyright (c) 2010 The Chromium Authors. All rights reserved.
+#!/usr/bin/env python
+# Copyright (c) 2011 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.
 
 # TODO(slightlyoff): move to using shared version of this script.
 
 '''This script makes it easy to combine libs and object files to a new lib,
 optionally removing some of the object files in the input libs by regular
 expression matching.
 For usage information, run the script with a --help argument.
 '''
@@ skipping 89 matching lines @@
     remove_re = None
 
   if sys.platform != 'win32' and sys.platform != 'cygwin':
     parser.error('this script only works on Windows for now')
 
   # If this is set, we can't capture lib.exe's output.
   if 'VS_UNICODE_OUTPUT' in os.environ:
     del os.environ['VS_UNICODE_OUTPUT']
 
   CombineLibraries(output, remove_re, args)
+  return 0
 
 
 if __name__ == '__main__':
-  Main()
+  sys.exit(Main())