Copyright for m4 source package in Huanghe V3.0

This is the Debian prepackaged version of the FSF's GNU m4 macro processor.
GNU `m4' has been originally written by René Seindal, from Denmark,
with subsequent changes by François Pinard and other volunteers on
the Internet. A list of contributors to the GNU program is in the
THANKS file in the source distribution, or appended below in the
binary package.

This package was first put together by Ian Jackson 
and is currently maintained by Santiago Vila .

The GNU sources for this release were obtained from

https://ftp.gnu.org/gnu/m4/m4-1.4.19.tar.xz

The changes were very minimal - merely adding support for the Debian
package maintenance scheme, by adding various debian/* files.


Program Copyright (C) 1989-2021 Free Software Foundation, Inc.
Modifications for Debian Copyright (C) 1994 Ian Jackson.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.

This program 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
General Public License for more details.


M4 manual (m4.info) Copyright (C) 1989–1994, 2004–2014, 2016–2017, 2020–2021 Free Software Foundation, Inc.

     Permission is granted to copy, distribute and/or modify this
     document under the terms of the GNU Free Documentation License,
     Version 1.3 or any later version published by the Free Software
     Foundation; with no Invariant Sections, no Front-Cover Texts, and
     no Back-Cover Texts.


On Debian systems, the complete text of the GNU General Public License
can be found in `/usr/share/common-licenses/GPL', and the complete
text of the GNU Free Documentation License can be found in
`/usr/share/common-licenses/GFDL'.