Adding upstream version 2.4.2+debian.

Signed-off-by: Daniel Baumann <daniel@debian.org>

Makefile.am

@@ -0,0 +1,30 @@
+# Copyright 2019-2021 OARC, Inc.
+# Copyright 2017-2018 Akamai Technologies
+# Copyright 2006-2016 Nominum, Inc.
+# All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+ACLOCAL_AMFLAGS = -I m4
+
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in \
+  $(srcdir)/src/config.h.in~ \
+  $(srcdir)/configure
+
+SUBDIRS = src
+
+dist_doc_DATA = CHANGES README.md LICENSE
+
+EXTRA_DIST = m4 contrib
+
+test: check