Set end copyright date to 2012.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1301703 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

NOTICE.txt

@@ -1,5 +1,5 @@
 Apache Commons Codec
-Copyright 2002-2011 The Apache Software Foundation
+Copyright 2002-2012 The Apache Software Foundation
 
 This product includes software developed by
 The Apache Software Foundation (http://www.apache.org/).