Add --force as a synonym for --no_presubmit as per Nicolas' request.

tests/gcl_unittest.py

 #!/usr/bin/python
 # Copyright (c) 2009 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.
 
 """Unit tests for gcl.py."""
 
 import unittest
 
 # Local imports
@@ skipping 24 matching lines @@
       print diff
     self.assertEqual(actual_members, expected_members)
 
 
 class GclUnittest(GclTestsBase):
   """General gcl.py tests."""
   def testMembersChanged(self):
     members = [
       'CODEREVIEW_SETTINGS', 'CODEREVIEW_SETTINGS_FILE', 'CPP_EXTENSIONS',
       'Change', 'ChangeInfo', 'Changes', 'Commit', 'DoPresubmitChecks',
-      'ErrorExit', 'FILES_CACHE', 'GenerateChangeName', 'GenerateDiff',
+      'ErrorExit', 'FILES_CACHE', 'FilterFlag', 'GenerateChangeName',
+      'GenerateDiff',
       'GetCacheDir', 'GetCachedFile', 'GetChangesDir', 'GetCLs',
       'GetChangelistInfoFile', 'GetCodeReviewSetting', 'GetEditor',
       'GetFilesNotInCL', 'GetInfoDir', 'GetIssueDescription',
       'GetModifiedFiles', 'GetRepositoryRoot',
       'GetSVNFileProperty', 'Help', 'IGNORE_PATHS', 'IsSVNMoved',
       'Lint', 'LoadChangelistInfoForMultiple',
-      'MISSING_TEST_MSG', 'Opened', 'PresubmitCL', 'ReadFile',
-      'REPOSITORY_ROOT', 'RunShell',
+      'MISSING_TEST_MSG', 'Opened', 'OptionallyDoPresubmitChecks',
+      'PresubmitCL', 'ReadFile', 'REPOSITORY_ROOT', 'RunShell',
       'RunShellWithReturnCode', 'SendToRietveld', 'TryChange',
       'UnknownFiles', 'UploadCL', 'Warn', 'WriteFile',
       'gclient', 'getpass', 'main', 'os', 'random', 're',
       'shutil', 'string', 'subprocess', 'sys', 'tempfile',
       'upload', 'urllib2', 'xml',
     ]
     # If this test fails, you should add the relevant test.
     self.compareMembers(gcl, members)
 
 
@@ skipping 207 matching lines @@
     gcl.os.chdir('somewhere')
     self.mox.ReplayAll()
 
     gcl.UploadCL(change_info, args)
     self.assertEquals(change_info.issue, 1)
     self.assertEquals(change_info.patchset, 2)
 
 
 if __name__ == '__main__':
   unittest.main()