luci-py: Making __file__ usage unicode safe.

client/swarming.py

 #!/usr/bin/env python
 # Copyright 2013 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 """Client tool to trigger tasks or retrieve results from a Swarming server."""
 
 __version__ = '0.8.6'
 
 import collections
@@ skipping 22 matching lines @@
 from utils import subprocess42
 from utils import threading_utils
 from utils import tools
 
 import auth
 import isolated_format
 import isolateserver
 import run_isolated
 
 
-ROOT_DIR = os.path.dirname(os.path.abspath(__file__))
+ROOT_DIR = os.path.dirname(os.path.abspath(
+    __file__.decode(sys.getfilesystemencoding())))
 
 
 class Failure(Exception):
   """Generic failure."""
   pass
 
 
 ### Isolated file handling.
 
 
@@ skipping 1538 matching lines @@
   dispatcher = subcommand.CommandDispatcher(__name__)
   return dispatcher.execute(OptionParserSwarming(version=__version__), args)
 
 
 if __name__ == '__main__':
   subprocess42.inhibit_os_error_reporting()
   fix_encoding.fix_encoding()
   tools.disable_buffering()
   colorama.init()
   sys.exit(main(sys.argv[1:]))