This should actually use the install-prereq script so we don't duplicate
effort on the maintenance of these scripts. But let's at least install
the correct version for now.
For full instructions/notes see Tools/vagrant/README.md
Notes:
* Old Vagrantfile updated to run faster and self init with our various
build dependancies.
* The sim_vehicle.sh script will now implicitly configure if necessary
* run_in_terminal_window.sh is now smart enough to use Screen sessions. Or
if those are not available to warn the user but run the command with logging
going to a file in /tmp.
Andrew Tridgell
Lucas De Marchi
Andy Piper
Kevin Hester