Copyright for btyacc source package in Noble

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: BtYacc
Upstream-Contact: Vadim Maslov 
Source: https://www.siber.com/btyacc/ or
        https://github.com/ChrisDodd/btyacc
Files-Excluded: test/ftp.y
Comment: the excluded file test/ftp.y is under a BSD variant license without
         an explicit permission to modify the source code.

Files: *
Copyright: ? Chris Dodd 
           ? corbett@berkeley.edu
           ? Matthias Meixner 
           ? Vadim Maslov 
License: Public-Domain
Comment: some considerations about licensing, from Richard Atterer:
 Further license notice by Chris Dodd and Vadim Maslov:
 .
  In English: BtYacc is freeware. BtYacc is distributed with no
  warranty whatsoever. The author and any other contributors take no
  responsibility for any and all consequences of its use.
  .
  In Legalese: LIMITATION OF LIABILITY. NEITHER SIBER SYSTEMS NOR ANY
  OF ITS LICENSORS NOR ANY BTYACC CONTRIBUTOR SHALL BE LIABLE FOR ANY
  INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES, OR DAMAGES
  FOR LOSS OF PROFITS, REVENUE, DATA OR DATA USE, CAUSED BY BTYACC AND
  INCURRED BY CUSTOMER OR ANY THIRD PARTY, WHETHER IN AN ACTION IN
  CONTRACT OR TORT, EVEN IF SIBER SYSTEMS HAS BEEN ADVISED OF THE
  POSSIBILITY OF SUCH DAMAGES.
 .
 Because of the unclear meaning of the term "Freeware", I (Richard
 Atterer) contacted the contributors by mail and asked them to clarify
 its meaning. Statement by Chris Dodd:
 .
 > All of my changes to Berkeley Yacc in making btyacc are public
 > domain, as is the original byacc. I did that originally as I was
 > unable to maintain btyacc, and wanted to make it widely available to
 > anyone who could. I believe there's actually a statement to this
 > effect in the top of the readme file.
 .
 Statement by Vadim Maslov:
 .
 > BtYacc is free in the freest sense of a word. Modification,
 > improvement, commercial use -- all this is possible.
 >
 > It is free in the same sense as original Berkeley Yacc, so it is
 > freer than GNU yacc -- you can use it in commercial systems, I
 > myself use it in CobolTransformer that is licensed for a lot of
 > money.
 >
 [snip]
 > BtYacc, just like Byacc is hereby officially donated to public
 > domain. And as I understand, Chris Dodd agrees with me.

Files: debian/*
Copyright: 2001-2006 Richard Atterer 
           2020      Joao Eriberto Mota Filho 
License: Public-Domain

License: Public-Domain
 This software is under Public Domain.