Copyright for libvorbis source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Vorbis audio compression
Upstream-Contact: Monty 
Source: https://www.xiph.org/downloads/

Files: *
Copyright: 2002, Xiph.org Foundation
License: BSD-3-Clause

Files: doc/rfc5215.*
Copyright: 2008, The IETF Trust
License: RFC-special
 The authors agree to grant third parties the irrevocable right to
 copy, use, and distribute the work, with or without modification, in
 any medium, without royalty, provided that, unless separate
 permission is granted, redistributed modified works do not contain
 misleading author, version, name of work, or endorsement information.

Files: debian/*
Copyright: 2000, Christopher L Cheney 
License: BSD-3-Clause

License: BSD-3-Clause
 Copyright (c) 2002, Xiph.org Foundation
 .
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
 are met:
 .
 - Redistributions of source code must retain the above copyright
 notice, this list of conditions and the following disclaimer.
 .
 - Redistributions in binary form must reproduce the above copyright
 notice, this list of conditions and the following disclaimer in the
 documentation and/or other materials provided with the distribution.
 .
 - Neither the name of the Xiph.org Foundation nor the names of its
 contributors may be used to endorse or promote products derived from
 this software without specific prior written permission.
 .
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION
 OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.