Bug#697438: Acknowledgement (RFP: linux-user-chroot -- setuid helper for making bind mounts and chrooting)

[Emanuele Aina <emanuele.aina@collabora.com>]

Hello all, I've updated the linux-user-chroot packaging to the latest
release (2013.1), and I took the liberty of rebasing Thomas' work on top
of the upstream git history:

https://github.com/em-/pkg-linux-user-chroot-debian

Other than integrating the new release the main change I've made is to
use setuid instead of setgid, as setgid wasn't working for me (and the
fedora packaging uses setuid too).