Copyright for pangox-compat source package in Focal

Debian packaging by Emilio Pozuelo Monfort 

Upstream sources:
 

Upstream Authors:
 Owen Taylor 
 Behdad Esfahbod 

Copyright:

 Copyright (C) 1999-2003 Red Hat Software
 Copyright (C) 2000 SuSE Linux Ltd

 This library is free software; 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 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
 Library General Public License for more details.

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

 See /usr/share/common-licenses/LGPL-2 on your debian system.