add Xsession script to launch Unity indicators
CD to a known directory before starting the test.

Fixes some failures when the daemon is run from transient directories.
use XDG autostart instead of Xsession
unconditionally run croutonversion to get RELEASE
moar unity
Merge branch 'unity-trusty' of https://github.com/smibarber/crouton
Ubantoo 14.04 Trusty Trilobite in, 12.10 Quantal Quagga out.
Temporary workaround for #777 while we investigate googlesource.com
test/upgrade: Update test to include trusty
Log what we are trying to do.
Smarter test.
precise->trusty is not official yet
Cleaner code
More upgrade path.