Standardize the sys.path fix up and fix a few pylint warnings.

presubmit_support.py

 #!/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.
 
 """Enables directory-specific presubmit checks to run at upload and/or commit.
 """
 
 __version__ = '1.6.1'
 
@@ skipping 644 matching lines @@
   tested.
 
   Instance members:
     tags: Dictionnary of KEY=VALUE pairs found in the change description.
     self.KEY: equivalent to tags['KEY']
   """
 
   _AFFECTED_FILES = AffectedFile
 
   # Matches key/value (or "tag") lines in changelist descriptions.
-  _TAG_LINE_RE = re.compile(
+  TAG_LINE_RE = re.compile(
       '^\s*(?P<key>[A-Z][A-Z_0-9]*)\s*=\s*(?P<value>.*?)\s*$')
   scm = ''
 
   def __init__(
       self, name, description, local_root, files, issue, patchset, author):
     if files is None:
       files = []
     self._name = name
     self._full_description = description
     # Convert root into an absolute path.
     self._local_root = os.path.abspath(local_root)
     self.issue = issue
     self.patchset = patchset
     self.author_email = author
 
     # From the description text, build up a dictionary of key/value pairs
     # plus the description minus all key/value or "tag" lines.
     description_without_tags = []
     self.tags = {}
     for line in self._full_description.splitlines():
-      m = self._TAG_LINE_RE.match(line)
+      m = self.TAG_LINE_RE.match(line)
       if m:
         self.tags[m.group('key')] = m.group('value')
       else:
         description_without_tags.append(line)
 
     # Change back to text and remove whitespace at end.
     self._description_without_tags = (
         '\n'.join(description_without_tags).rstrip())
 
     assert all(
@@ skipping 561 matching lines @@
   except PresubmitFailure, e:
     print >> sys.stderr, e
     print >> sys.stderr, 'Maybe your depot_tools is out of date?'
     print >> sys.stderr, 'If all fails, contact maruel@'
     return 2
 
 
 if __name__ == '__main__':
   fix_encoding.fix_encoding()
   sys.exit(Main(None))