Test harness for quake2-data

This is a horrid hack using User-Mode-Linux to create a test environment for
quake2-data.  It is a way to automatically install the package with different
options and test the results for buggy installs.  It also allows one to
automate upgrades, clean installs, and downgrades.

This is deliberately *not* part of the build process in debian/rules because
it requires a lot of manual setting up and dependence on weird things that are
unrelated to the package itself.

You should have the following things installed:

a host kernel with tuntap support
a uml kernel with hostfs and tuntap support
a debian rootfs (one from the UML website will do) about 500M in size
the following debian packages:
	expect
	uml-utilities
