Made a few changes necessary to get this running on James's Debian
virtual machines.  The script now aims to be backwards compatible
with Debian 5, i.e. you can build the Launcher's .deb package on
a Debian 5 machine. See
https://confluence-vre.its.monash.edu.au/display/CVL/Automatic+build+on+64-bit+Debian+5+or+Debian+6