Fetch appropriate version of libsbc1 to prevent breakage during release upgrade.
Remove xserver-xephyr apt preference file on Ubuntu >quantal.
Add trusty (14.04) to Ubuntu release list.
Add test script for Ubuntu updates from precise to trusty (via non-LTS releases).
Fix libsbc1 version in Debian wheezy (use backport).
Pass $TESTLOG variable to test scripts, to allow output to secondary log files.
Fixes after review.
Remove unneeded delete-chroot.
Mark Ubuntu trusty as unsupported.