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

PRESUBMIT.py

Index: PRESUBMIT.py
diff --git a/appengine/PRESUBMIT.py b/PRESUBMIT.py
similarity index 89%
rename from appengine/PRESUBMIT.py
rename to PRESUBMIT.py
index f7eba15c8c8c54af5575b31a4cc8d92faa8e4ce6..d4e08c648f87bd91d946395d94f9b8b1076b73ba 100644
--- a/appengine/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -1,8 +1,8 @@
-# Copyright 2013 The Swarming Authors. All rights reserved.
+# 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.
 
-"""Top-level presubmit script for swarming.
+"""Top-level presubmit script for LUCI.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts for
 details on the presubmit API built into gcl.
@@ -15,7 +15,7 @@ def header(input_api):
   allowed_years = (str(s) for s in reversed(xrange(2011, current_year + 1)))
   years_re = '(' + '|'.join(allowed_years) + ')'
   license_header = (
-    r'.*? Copyright %(year)s The Swarming Authors\. '
+    r'.*? Copyright %(year)s The LUCI Authors\. '
       r'All rights reserved\.\n'
     r'.*? Use of this source code is governed by the Apache v2\.0 license '
       r'that can be\n'