Add some debugging to buildbot_globals, sort the trybot list

tools/submit_try

 #!/usr/bin/python
 
 # Copyright (c) 2013 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.
 
 
 """
 submit_try: Submit a try request.
 
@@ skipping 154 matching lines @@
 
   using_bots = None
   changelist = None
   revision = None
 
   while argv:
     arg = argv.pop(0)
     if arg == '-h' or arg == '--help':
       Error()
     elif arg == '-l' or arg == '--list_bots':
-      format_args = ['\n  '.join(trybots)] + ALL_ALIASES
+      format_args = ['\n  '.join(sorted(trybots))] + ALL_ALIASES
       print (
 """
 submit_try: Available builders:\n  %s
 
 Can also use the following aliases to run on groups of builders-
   %s: Will run against all trybots.
   %s: Will run against all compile trybots.
   %s: Will run against the same trybots as the commit queue.
   %s: You will be prompted to enter a regex to select builders with.
 
@@ skipping 106 matching lines @@
 
   # Parse and validate the command-line arguments.
   args = ValidateArgs(sys.argv[1:], trybots=trybots, is_svn=is_svn)
 
   # Submit the try request.
   SubmitTryRequest(args, is_svn=is_svn)
 
 
 if __name__ == '__main__':
   sys.exit(main())