update file headers to remove copyright years

CONTRIBUTING.md

 <!--
- - Copyright (C) 2018  Internet Systems Consortium, Inc. ("ISC")
+ - 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.
 -->
 ## BIND Source Access and Contributor Guidelines
 *Feb 22, 2018*

COPYRIGHT

-Copyright (C) 1996-2018  Internet Systems Consortium, Inc. ("ISC")
+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.
+
  -----------------------------------------------------------------------------
 
 	Portions of this code release fall under one or more of the

HISTORY.md

 <!--
- - Copyright (C) 2017  Internet Systems Consortium, Inc. ("ISC")
+ - 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.
 -->
 ### Functional enhancements from prior major releases of BIND 9
 

Makefile.in

-# Copyright (C) 1998-2002, 2004-2009, 2011-2018  Internet Systems Consortium, Inc. ("ISC")
+# 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.
 
 srcdir =	@srcdir@
 VPATH =		@srcdir@

OPTIONS.md

 <!--
- - Copyright (C) 2017  Internet Systems Consortium, Inc. ("ISC")
+ - 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.
 -->
 Setting the `STD_CDEFINES` environment variable before running `configure`
 can be used to enable certain compile-time options that are not explicitly

README.md

 <!--
- - Copyright (C) 2017, 2018  Internet Systems Consortium, Inc. ("ISC")
+ - 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.
 -->
 # BIND 9
 

acconfig.h

 /*
- * Copyright (C) 1999-2005, 2007, 2008, 2012, 2014, 2016, 2018  Internet Systems Consortium, Inc. ("ISC")
+ * 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.
  */
 
 /*! \file */

autogen.sh

 #!/bin/sh
 #
-# Copyright (C) 2015, 2016  Internet Systems Consortium, Inc. ("ISC")
+# 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.
 
 # Run this script after modifying configure.in to generate configure
 autoreconf -i

bin/Makefile.in

-# Copyright (C) 1998-2001, 2004, 2007, 2009, 2012-2014, 2016, 2018  Internet Systems Consortium, Inc. ("ISC")
+# 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.
 
 srcdir =	@srcdir@
 VPATH =		@srcdir@

bin/check/Makefile.in

-# Copyright (C) 2000-2007, 2009, 2012, 2014-2016  Internet Systems Consortium, Inc. ("ISC")
+# 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.
 
 # $Id: Makefile.in,v 1.36 2009/12/05 23:31:40 each Exp $
 

bin/check/check-tool.c

 /*
- * Copyright (C) 2000-2002, 2004-2017  Internet Systems Consortium, Inc. ("ISC")
+ * 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.
  */
 
 /* $Id: check-tool.c,v 1.44 2011/12/22 07:32:39 each Exp $ */

bin/check/check-tool.h

 /*
- * Copyright (C) 2000-2002, 2004, 2005, 2007, 2010, 2011, 2013, 2014, 2016  Internet Systems Consortium, Inc. ("ISC")
+ * 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.
  */
 
 /* $Id: check-tool.h,v 1.18 2011/12/09 23:47:02 tbox Exp $ */

bin/check/named-checkconf.c

 /*
- * Copyright (C) 1999-2002, 2004-2007, 2009-2016  Internet Systems Consortium, Inc. ("ISC")
+ * 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.
  */
 
 /* $Id: named-checkconf.c,v 1.56 2011/03/12 04:59:46 tbox Exp $ */

bin/check/named-checkconf.docbook

 <!DOCTYPE book [
 <!ENTITY mdash "&#8212;">]>
 <!--
- - Copyright (C) 2000-2002, 2004, 2005, 2007, 2009, 2014-2016  Internet Systems Consortium, Inc. ("ISC")
+ - 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.
 -->
 
 <!-- Converted by db4-upgrade version 1.0 -->
@@ -36,6 +39,7 @@
       <year>2014</year>
       <year>2015</year>
       <year>2016</year>
+      <year>2018</year>
       <holder>Internet Systems Consortium, Inc. ("ISC")</holder>
     </copyright>
   </docinfo>

bin/check/named-checkzone.c

 /*
- * Copyright (C) 1999-2016  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
  *
  * This Source Code Form is subject to the terms of the Mozilla Public