final cleanup

- update Kyuafiles to match Atffiles
- copyrights
- CHANGES note

lib/dns/tests/testdata/db/data.db

@@ -1,3 +1,12 @@
+; Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+;
+; This Source Code Form is subject to the terms of the Mozilla Public
+; License, v. 2.0. If a copy of the MPL was not distributed with this
+; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;
+; See the COPYRIGHT file distributed with this work for additional
+; information regarding copyright ownership.
+
 $TTL 1000
 @		in	soa	localhost. postmaster.localhost. (
 				1993050801	;serial