Update the copyright information in all files in the repository

This commit converts the license handling to adhere to the REUSE
specification.  It specifically:

1. Adds used licnses to LICENSES/ directory

2. Add "isc" template for adding the copyright boilerplate

3. Changes all source files to include copyright and SPDX license
   header, this includes all the C sources, documentation, zone files,
   configuration files.  There are notes in the doc/dev/copyrights file
   on how to add correct headers to the new files.

4. Handle the rest that can't be modified via .reuse/dep5 file.  The
   binary (or otherwise unmodifiable) files could have license places
   next to them in <foo>.license file, but this would lead to cluttered
   repository and most of the files handled in the .reuse/dep5 file are
   system test files.

util/COPYRIGHT

@@ -1,8 +0,0 @@
-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 https://mozilla.org/MPL/2.0/.
-
-See the COPYRIGHT file distributed with this work for additional
-information regarding copyright ownership.

util/bindkeys.pl

@@ -1,9 +1,11 @@
 #!/usr/bin/env perl
-#
+
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
 # file, you can obtain one at https://mozilla.org/MPL/2.0/.
 #
 # See the COPYRIGHT file distributed with this work for additional

util/check-categories.sh

@@ -1,7 +1,9 @@
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
 # file, you can obtain one at https://mozilla.org/MPL/2.0/.
 #
 # See the COPYRIGHT file distributed with this work for additional

util/check-changes

@@ -2,6 +2,8 @@
 #
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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 https://mozilla.org/MPL/2.0/.

util/check-cocci

@@ -1,4 +1,15 @@
 #!/bin/sh
+#
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# 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 https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
 
 ret=0
 for spatch in cocci/*.spatch; do

util/check-includes.pl

@@ -1,9 +1,11 @@
 #! /usr/bin/perl -ws
-#
+
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
 # file, you can obtain one at https://mozilla.org/MPL/2.0/.
 #
 # See the COPYRIGHT file distributed with this work for additional

util/check-instincludes.sh

@@ -1,9 +1,11 @@
 #!/bin/sh
-#
+
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
 # file, you can obtain one at https://mozilla.org/MPL/2.0/.
 #
 # See the COPYRIGHT file distributed with this work for additional

util/check-line-length.sh

@@ -1,7 +1,9 @@
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
 # file, you can obtain one at https://mozilla.org/MPL/2.0/.
 #
 # See the COPYRIGHT file distributed with this work for additional

util/check-make-install.in

@@ -2,6 +2,8 @@
 #
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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 https://mozilla.org/MPL/2.0/.

util/check-pullups.pl

@@ -1,9 +1,11 @@
 #!/usr/bin/perl
-#
+
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
 # file, you can obtain one at https://mozilla.org/MPL/2.0/.
 #
 # See the COPYRIGHT file distributed with this work for additional

util/checklibs.sh

@@ -1,9 +1,11 @@
 #!/bin/sh
-#
+
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
 # file, you can obtain one at https://mozilla.org/MPL/2.0/.
 #
 # See the COPYRIGHT file distributed with this work for additional

util/git-replay-merge.sh

@@ -1,9 +1,11 @@
 #!/bin/bash
-#
+
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
 # file, you can obtain one at https://mozilla.org/MPL/2.0/.
 #
 # See the COPYRIGHT file distributed with this work for additional

util/memleak.pl

@@ -1,9 +1,11 @@
 #!/usr/bin/perl
-#
+
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
 # file, you can obtain one at https://mozilla.org/MPL/2.0/.
 #
 # See the COPYRIGHT file distributed with this work for additional

util/models.c

@@ -1,6 +1,8 @@
 /*
  * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
  *
+ * SPDX-License-Identifier: MPL-2.0
+ *
  * 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 https://mozilla.org/MPL/2.0/.

util/nanny.pl

@@ -1,9 +1,11 @@
 #!/usr/bin/perl
-#
+
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
 # file, you can obtain one at https://mozilla.org/MPL/2.0/.
 #
 # See the COPYRIGHT file distributed with this work for additional

util/new-func

@@ -2,13 +2,15 @@
 #
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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 https://mozilla.org/MPL/2.0/.
 #
 # See the COPYRIGHT file distributed with this work for additional
 # information regarding copyright ownership.
-
+#
 # Given two CHANGES files, list [bug] entries present in the
 # first one but not in the second one.
 #
@@ -24,7 +26,7 @@ sub readfile {
 	my ($fn) = @_;
 	my $fh = new FileHandle($fn, "r")
 	    or die "open: $fn: $!";
-	
+
 	my $changes = { };
 
 	my ($changeid, $category);

util/pairwise-testing.sh

@@ -1,9 +1,11 @@
 #!/bin/bash
-#
+
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
 # file, you can obtain one at https://mozilla.org/MPL/2.0/.
 #
 # See the COPYRIGHT file distributed with this work for additional

util/parse_tsan.py

@@ -2,6 +2,8 @@
 ############################################################################
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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 https://mozilla.org/MPL/2.0/.

util/run-clang-tidy

@@ -2,9 +2,13 @@
 #
 #===- run-clang-tidy.py - Parallel clang-tidy runner ---------*- python -*--===#
 #
+# Copyright (C) Manuel Klimek <klimek@google.com>
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 # See https://llvm.org/LICENSE.txt for license information.
-# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 #
 #===------------------------------------------------------------------------===#
 # FIXME: Integrate with clang-tidy-diff.py

util/tabify-changes

@@ -2,6 +2,8 @@
 #
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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 https://mozilla.org/MPL/2.0/.

util/unused-headers.sh

@@ -1,9 +1,11 @@
 #!/bin/bash
-#
+
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
 # file, you can obtain one at https://mozilla.org/MPL/2.0/.
 #
 # See the COPYRIGHT file distributed with this work for additional

util/xmllint-html.sh

@@ -1,9 +1,11 @@
 #!/bin/sh -f
-#
+
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
+# SPDX-License-Identifier: MPL-2.0
+#
 # 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
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
 # file, you can obtain one at https://mozilla.org/MPL/2.0/.
 #
 # See the COPYRIGHT file distributed with this work for additional