Add code to 'fix' python encoding and it's unit test.

trychange.py

 #!/usr/bin/python
 # Copyright (c) 2009 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.
 
 """Client-side script to send a try job to the try server. It communicates to
 the try server by either writting to a svn repository or by directly connecting
 to the server by HTTP.
 """
 
@@ skipping 21 matching lines @@
 try:
   import breakpad  # pylint: disable=W0611
 except ImportError:
   pass
 
 try:
   import gcl
 except ImportError:
   gcl = None
 
+import fix_encoding
 import gclient_utils
 import scm
 
 __version__ = '1.2'
 
 
 # Constants
 HELP_STRING = "Sorry, Tryserver is not available."
 USAGE = r"""%prog [options]
 
@@ skipping 710 matching lines @@
       return 1
     print >> sys.stderr, e
     return 1
   except gclient_utils.Error, e:
     print >> sys.stderr, e
     return 1
   return 0
 
 
 if __name__ == "__main__":
+  fix_encoding.fix_encoding()
   sys.exit(TryChange(None, [], False))