[NaCl SDK] Convert python scripts from optparse to argparse.

native_client_sdk/src/build_tools/nacl-mono-archive.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
-import optparse
+import argparse
 import os
 import sys
 import tarfile
 
 import buildbot_common
 
 
 def main(args):
-  parser = optparse.OptionParser()
-  parser.add_option('--install-dir',
+  parser = argparse.ArgumentParser()
+  parser.add_argument('--install-dir',
                     help='Install Directory',
                     dest='install_dir',
                     default='naclmono')
-  parser.add_option('--tar-path',
+  parser.add_argument('--tar-path',
                     help='Tarfile path',
                     dest='tar_path',
                     default='naclmono_%pepperrev%.bz2')
-  parser.add_option('--upload-path',
+  parser.add_argument('--upload-path',
                     help='Upload path (nativeclient-mirror/nacl/nacl_sdk/XXX)',
                     dest='upload_path',
                     default=None)
-  parser.add_option('--pepper-revision',
+  parser.add_argument('--pepper-revision',
                     help='Pepper revision',
                     dest='pepper_revision',
                     default=None)
-  parser.add_option('--skip-upload',
+  parser.add_argument('--skip-upload',
                     help='Skips upload step',
                     action="store_true",
                     dest='skip_upload')
-  (options, args) = parser.parse_args(args)
+  options = parser.parse_args(args)
 
   if not options.upload_path:
     buildbot_common.ErrorExit('--upload-path is required')
   if not options.pepper_revision:
     buildbot_common.ErrorExit('--pepper-revision is required')
 
   options.tar_path = options.tar_path.replace('%pepperrev%',
                                               options.pepper_revision)
 
   install_folders = ['bin', 'etc', 'include', 'lib', 'lib32', 'libarm', 'share']
@@ skipping 10 matching lines @@
     if tar_file:
       tar_file.close()
 
   if not options.skip_upload:
     buildbot_common.Archive(os.path.basename(options.tar_path),
         'nativeclient-mirror/nacl/nacl_sdk/%s' % options.upload_path,
         cwd=os.path.dirname(os.path.abspath(options.tar_path)))
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))