Copyright for libapreq2 source package in Buster

This package was Debianized by Steinar H. Gunderson .
Upstream URL:

  http://httpd.apache.org/apreq/

Upstream copyright:

  This product includes software developed by
  The Apache Software Foundation (http://www.apache.org/).

  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You 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.

On Debian systems, you can also find the full text of the Apache 2.0 license
in /usr/share/common-licenses/Apache-2.0.