[2856] Fix copyright year

src/lib/python/isc/memmgr/logger.py

@@ -1,4 +1,4 @@
-# Copyright (C) 2012  Internet Systems Consortium, Inc. ("ISC")
+# Copyright (C) 2013  Internet Systems Consortium, Inc. ("ISC")
 #
 # Permission to use, copy, modify, and distribute this software for any
 # purpose with or without fee is hereby granted, provided that the above