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

client/tests/zip_package_test.py

 #!/usr/bin/env python
-# Copyright 2013 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 2013 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 as StringIO
 import logging
 import os
 import subprocess
 import sys
 import tempfile
 import unittest
 import zipfile
 
@@ skipping 267 matching lines @@
         self.temp_dir,
         '321690737f78d081937f88c3fd0e625dd48ae07d-cert.pem')
     self.assertEqual(expected, actual)
 
 
 if __name__ == '__main__':
   fix_encoding.fix_encoding()
   VERBOSE = '-v' in sys.argv
   logging.basicConfig(level=logging.DEBUG if VERBOSE else logging.ERROR)
   unittest.main()