daemon.sh: Increase run time back to 24 hours.
Merge pull request #1185 from drinkcat/crouton-autotest

daemon.sh: Increase maximum run time back to 24 hours.
Add vtlock command for tests to ensure graphics exclusivity
Don't explicitly include core.
Don't override the log fd
Add xephyr and xorg tests.
Tweak test timing; unmount-chroot is still an issue.
Fix xorg/xephyr test command
test/35-xorg: Dump OpenGL+dri information
35/36-xorg/xephyr: Update to new split test
test/run.sh: Change vtlock function

So we can run multiple commands within the lock.
test/run.sh: Kill subprocesses when test exits

Move trap call so that it is actually executed, and kill any
leftover subprocesses so the test can complete.

Also, unmount chroot with -f.
tests/w?-*: Test all de/wm