Fix path filtering to be on the relative path and no on the absolute path.

PRESUBMIT.py

 # 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.
 
 """Top-level presubmit script for depot tools.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts for
 details on the presubmit API built into gcl.
 """
 
 UNIT_TESTS = [
   'tests.gcl_unittest',
   'tests.gclient_scm_test',
   'tests.gclient_smoketest',
   'tests.gclient_utils_test',
   'tests.presubmit_unittest',
   'tests.scm_unittest',
   'tests.trychange_unittest',
   'tests.watchlists_unittest',
 ]
 
 def CommonChecks(input_api, output_api):
   output = []
+  # Verify that LocalPath() is local, e.g.:
+  #   os.path.join(PresubmitLocalPath(), LocalPath()) == AbsoluteLocalPath()
+  for i in input_api.AffectedFiles():
+    if (input_api.os_path.join(input_api.PresubmitLocalPath(), i.LocalPath()) !=
+        i.AbsoluteLocalPath()):
+      output.append(output_api.PresubmitError('Path inconsistency'))
+      # Return right away because it needs to be fixed first.
+      return output
+
   output.extend(input_api.canned_checks.RunPythonUnitTests(
       input_api,
       output_api,
       UNIT_TESTS))
   output.extend(WasGitClUploadHookModified(input_api, output_api))
 
-  white_list = [r'.*\.py$', r'.*git-try$']
+  white_list = [r'.*\.py$', r'^git-try$']
   black_list = list(input_api.DEFAULT_BLACK_LIST) + [
-      r'.*cpplint\.py$', r'.*git_cl\/.*']
+      r'^cpplint\.py$',
+      r'^git_cl[\/\\].*',
+      r'^git_cl_repo[\/\\].*',
+      r'^git_cl[\/\\]test[\/\\]rietveld.*']
   output.extend(input_api.canned_checks.RunPylint(
       input_api,
       output_api,
       white_list=white_list,
       black_list=black_list))
   return output
 
 
 def CheckChangeOnUpload(input_api, output_api):
   return CommonChecks(input_api, output_api)
 
 
 def CheckChangeOnCommit(input_api, output_api):
   output = []
   output.extend(CommonChecks(input_api, output_api))
   output.extend(input_api.canned_checks.CheckDoNotSubmit(
       input_api,
       output_api))
   return output
 
 
 def WasGitClUploadHookModified(input_api, output_api):
   for affected_file in input_api.AffectedSourceFiles(None):
     if (input_api.os_path.basename(affected_file.LocalPath()) ==
         'git-cl-upload-hook'):
       return [output_api.PresubmitPromptWarning(
           'Don\'t forget to fix git-cl to download the newest version of '
           'git-cl-upload-hook')]
   return []