Update copyright notice from Swarming to LUCI; add AUTHORS and CONTRIBUTORS.

client/tests/isolate_test.py

 #!/usr/bin/env python
-# Copyright 2012 The Swarming 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.
+# Copyright 2012 The LUCI Authors. All rights reserved.
+# Use of this source code is governed by the Apache v2.0 license that can be
+# found in the LICENSE file.
 
 import cStringIO
 import hashlib
 import json
 import logging
 import optparse
 import os
 import shutil
 import subprocess
 import sys
@@ skipping 1603 matching lines @@
 
 def clear_env_vars():
   for e in ('ISOLATE_DEBUG', 'ISOLATE_SERVER'):
     os.environ.pop(e, None)
 
 
 if __name__ == '__main__':
   fix_encoding.fix_encoding()
   clear_env_vars()
   test_utils.main()