Update ZPL version.

Fix copyright holder per repository policy.

persistent/picklecache.py

 ##############################################################################
 #
-# Copyright (c) 2009 Zope Corporation and Contributors.
+# Copyright (c) 2009 Zope Foundation and Contributors.
 # All Rights Reserved.
 #
 # This software is subject to the provisions of the Zope Public License,

persistent/tests/test_mapping.py

@@ -4,7 +4,7 @@
 # All Rights Reserved.
 #
 # This software is subject to the provisions of the Zope Public License,
-# Version 2.0 (ZPL).  A copy of the ZPL should accompany this distribution.
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
 # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
 # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS

persistent/tests/test_persistent.py

@@ -4,7 +4,7 @@
 # All Rights Reserved.
 #
 # This software is subject to the provisions of the Zope Public License,
-# Version 2.0 (ZPL).  A copy of the ZPL should accompany this distribution.
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
 # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
 # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS

persistent/tests/test_picklecache.py

 ##############################################################################
 #
-# Copyright (c) 2009 Zope Corporation and Contributors.
+# Copyright (c) 2009 Zope Foundation and Contributors.
 # All Rights Reserved.
 #
 # This software is subject to the provisions of the Zope Public License,

persistent/tests/test_pypicklecache.py

 ##############################################################################
 #
-# Copyright (c) 2009 Zope Corporation and Contributors.
+# Copyright (c) 2009 Zope Foundation and Contributors.
 # All Rights Reserved.
 #
 # This software is subject to the provisions of the Zope Public License,