Copyright for libgc source package in Focal

This package was debianized by Mike Goldman  on
Tue,  9 Feb 1999 09:14:37 -0500, and taken over by
Ryan Murray  on Sat Jan 19 02:13:04 PST 2002

It was downloaded from
http://www.hpl.hp.com/personal/Hans_Boehm/gc/gc_source/

Upstream Author: Hans-J. Boehm 

Copyright:

Copyright (c) 1988, 1989 Hans-J. Boehm, Alan J. Demers
Copyright (c) 1991-1996 by Xerox Corporation.  All rights reserved.
Copyright (c) 1996-1999 by Silicon Graphics.  All rights reserved.
Copyright (c) 1999-2003 by Hewlett-Packard Company. All rights reserved.

The file linux_threads.c is also
Copyright (c) 1998 by Fergus Henderson.  All rights reserved.

The files Makefile.am, and configure.in are
Copyright (c) 2001 by Red Hat Inc. All rights reserved.

THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.

Permission is hereby granted to use or copy this program
for any purpose,  provided the above notices are retained on all copies.
Permission to modify the code and to distribute modified code is granted,
provided the above notices are retained, and a notice that the code was
modified is included with the above copyright notice. 

Some code modified for Debian GNU/Linux by Ryan Murray