Make git-try behave like calling trychange.py directly.

git-try

 #!/usr/bin/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.
 """Wrapper for trychange.py for git checkout."""
 
 import logging
 import sys
 
 import breakpad
@@ skipping 20 matching lines @@
 
 
 def GetRietveldServerUrl():
   try:
     return GIT.Capture(['config', 'rietveld.server']).strip()
   except gclient_utils.Error:
     return None
 
 
 if __name__ == '__main__':
-  args = sys.argv[:]
+  args = sys.argv[1:]
   patchset = GetRietveldPatchsetNumber()
   if patchset:
     args.extend([
         '--issue', GetRietveldIssueNumber(),
         '--patchset', patchset,
     ])
   else:
     rietveld_url = GetRietveldServerUrl()
     if rietveld_url:
       args.extend(['--rietveld_url', GetRietveldServerUrl()])
   # Hack around a limitation in logging.
   logging.getLogger().handlers = []
   sys.exit(trychange.TryChange(
     args, file_list=[], swallow_exception=False,
     prog='git-try',
     extra_epilog='\n'
                   'git-try will diff against your tracked branch and will '
                       'detect your rietveld\n'
                   'code review if you are using git-cl\n'))