branches/zip:

Add a sentence at the top of COPYING.Google to clarify that this license
does not apply to the whole InnoDB.

Suggested by:	Ken

COPYING.Google

+Portions of this software contain modifications contributed by Google, Inc.
+These contributions are used with the following license:
+
 Copyright (c) 2008, Google Inc. All rights reserved.
 
 Redistribution and use in source and binary forms, with or without