Copyright for gcc-bpf source package in Mantic

This is a debian package of GNU GCC compiled for BPF.

This copyright file covers only the packaging of the compiler and not
the compiler itself. The copyright for GCC can be found in copyright-gcc

debian/*

Copyright: GNU General Public License

Copyright © 2020 Matthias Klose

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