Copyright for apt-btrfs-snapshot source package in Mantic

This package was debianized by Michael Vogt  on Fri,
16 Feb 2011 10:10:41 +0100.

It was downloaded via bzr from
https://launchpad.net/apt-btrfs-snapshot

Upstream Author: Michael Vogt 

Copyright (c) 2011 Canonical Ltd

Copyright: GPL, see /usr/share/common-licenses/GPL