Copyright for zbar source package in Buster

This work was originally packaged for Debian by Daniel Baumann
 and is later maintained by Bernd Zeimetz .

It was downloaded from:
  http://zbar.sourceforge.net/

The current version of zbar is downloaded from:
  https://github.com/mchehab/zbar

Below follows the copyrigt and license information as
provided in the file COPYING

  The ZBar Bar Code Reader is Copyright (C) 2007-2009 Jeff Brown
   
  The QR Code reader is Copyright (C) 1999-2009 Timothy B. Terriberry
   

  You can redistribute this library and/or modify it under the terms of the GNU
   Lesser General Public License as published by the Free Software Foundation;
   either version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
   FOR A PARTICULAR PURPOSE.
  See the GNU Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License along
   with this library; if not, write to the Free Software Foundation, Inc.,
   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  ISAAC is based on the public domain implementation by Robert J. Jenkins Jr.,
   and is itself public domain.

  Portions of the bit stream reader are copyright (C) The Xiph.Org Foundation
   1994-2008, and are licensed under a BSD-style license.

  The Reed-Solomon decoder is derived from an implementation (C) 1991-1995 Henry
   Minsky (hqm@ua.com, hqm@ai.mit.edu), and is licensed under the LGPL with
   permission.



The debian packaging is
 Copyright (C) 2008-2009 Daniel Baumann 
 Copyright (C) 2010 Bernd Zeimetz 
and licensed under the same license as zbar; you can redistribute
it and/or modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

On Debian systems, the complete text of the GNU Library General Public License
can be found in /usr/share/common-licenses/LGPL-2.1 file.


The hints about GFDL and invariant documentations, which were forgotton in
the doc folder, were fixed by upstream, see the following URLs for details:
https://sourceforge.net/tracker/?func=detail&aid=3004411&group_id=189236&atid=928515
http://zbar.hg.sourceforge.net/hgweb/zbar/zbar/rev/a400dd46fb4a
http://zbar.hg.sourceforge.net/hgweb/zbar/zbar/rev/41ea3fade9e1