Add InputApi.version so the presubmit script can mark a minimum supported version for instance.

presubmit_support.py

 #!/usr/bin/python
 # Copyright (c) 2006-2009 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.
 
 """Enables directory-specific presubmit checks to run at upload and/or commit.
 """
 
-__version__ = '1.0.1'
+__version__ = '1.1'
 
 # TODO(joi) Add caching where appropriate/needed. The API is designed to allow
 # caching (between all different invocations of presubmit scripts for a given
 # change). We should add it as our presubmit scripts start feeling slow.
 
 import cPickle  # Exposed through the API.
 import cStringIO  # Exposed through the API.
 import exceptions
 import fnmatch
 import glob
@@ skipping 135 matching lines @@
   know stuff about the change they're looking at.
   """
 
   def __init__(self, change, presubmit_path):
     """Builds an InputApi object.
 
     Args:
       change: A presubmit.GclChange object.
       presubmit_path: The path to the presubmit script being processed.
     """
+    # Version number of the presubmit_support script.
+    self.version = [int(x) for x in __version__.split('.')]
     self.change = change
 
     # We expose various modules and functions as attributes of the input_api
     # so that presubmit scripts don't have to import them.
     self.basename = os.path.basename
     self.cPickle = cPickle
     self.cStringIO = cStringIO
     self.os_path = os.path
     self.pickle = pickle
     self.marshal = marshal
@@ skipping 567 matching lines @@
   return not DoPresubmitChecks(gcl.ChangeInfo(name='temp', files=files),
                                options.commit,
                                options.verbose,
                                sys.stdout,
                                sys.stdin,
                                default_presubmit=None)
 
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv))