Update srcroot to be an absolute path.

cros_mark_as_stable.py

 #!/usr/bin/python
 
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """This module uprevs a given package's ebuild to the next revision."""
 
 
 import fileinput
@@ skipping 156 matching lines @@
 def _CheckSaneArguments(package_list, command):
   """Checks to make sure the flags are sane.  Dies if arguments are not sane."""
   if not command in _COMMAND_DICTIONARY.keys():
     _PrintUsageAndDie('%s is not a valid command' % command)
   if not gflags.FLAGS.packages and command == 'commit' and not gflags.FLAGS.all:
     _PrintUsageAndDie('Please specify at least one package')
   if not gflags.FLAGS.board and command == 'commit':
     _PrintUsageAndDie('Please specify a board')
   if not os.path.isdir(gflags.FLAGS.srcroot):
     _PrintUsageAndDie('srcroot is not a valid path')
+  gflags.FLAGS.srcroot = os.path.abspath(gflags.FLAGS.srcroot)
 
 
 def _Clean():
   """Cleans up uncommitted changes on either stabilizing branch or master."""
   _SimpleRunCommand('git reset HEAD --hard')
   _SimpleRunCommand('git checkout %s' % gflags.FLAGS.tracking_branch)
 
 
 def _PrintUsageAndDie(error_message=''):
   """Prints optional error_message the usage and returns an error exit code."""
@@ skipping 333 matching lines @@
           raise
 
       if revved_packages:
         _CleanStalePackages(gflags.FLAGS.board, revved_packages)
       else:
         work_branch.Delete()
 
 
 if __name__ == '__main__':
   main(sys.argv)