Make missing PRESUBMIT.py warning consistent with others.

presubmit_support.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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__ = '1.8.0'
 
@@ skipping 1115 matching lines @@
     default_presubmit: A default presubmit script to execute in any case.
     project: Optional name of a project used in selecting trybots.
     verbose: Prints debug info.
     output_stream: A stream to write debug output to.
 
   Return:
     List of try slaves
   """
   presubmit_files = ListRelevantPresubmitFiles(changed_files, repository_root)
   if not presubmit_files and verbose:
-    output_stream.write("Warning, no presubmit.py found.\n")
+    output_stream.write("Warning, no PRESUBMIT.py found.\n")
   results = []
   executer = GetTrySlavesExecuter()
 
   if default_presubmit:
     if verbose:
       output_stream.write("Running default presubmit script.\n")
     fake_path = os.path.join(repository_root, 'PRESUBMIT.py')
     results.extend(executer.ExecPresubmitScript(
         default_presubmit, fake_path, project, change))
   for filename in presubmit_files:
@@ skipping 460 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 sys.stderr, 'Maybe your depot_tools is out of date?'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))