[RFC/PATCH] libguestfs: build Debian based appliance

[Guido Günther]

Hi Rich,
attached patches allows to build the appliance based on Debian (or any
Debian based distribution supported by debirf) by using e.g.:

./configure --with-repo=squeeze --with-mirror=http://apt:9999/debian

Please note that the third patch isn't to be applied yet, it simply
overwrites the contents of make/update.sh.in with the stuff we need for
Debian. Also when building a fixed (#509381) debirf is needed which has
just been uploded to unstable.
Cheers,
 -- Guido