jessie: Install xbindkeys directly from mirror.

Fixes #597.
Merge pull request #608 from drinkcat/jessie-xbindkeys

jessie: Install xbindkeys directly from mirror.
Merge pull request #637 from divx118/master

This will fix failure of chrome-* target install when it will be installed before a window manager.
Fix audio on adhd master.

Compilation broke sometimes after build 5511, because of an added timespec.

Upstream commit: https://chromium.googlesource.com/chromiumos/third_party/adhd/+/6d785f2e9175478aac2cdd4962b6175f8dee5b34.
audio: Print Chromium OS version to ease debugging during tests.
Merge branch 'fix-audio-master-5512' of https://github.com/drinkcat/chroagh
Fix encryption test when run from /
Install lts-saucy xorg on Haswell for precise release. For better support of the intel driver.
Fixed remarks on the previous commit, added xorg config file to enable sna accelaration and TearFree is true. This should be enough to enable fbc again for the supported distro releases on haswell.
Renamed 20-intel.conf to 20-intel-crouton.conf, and enabled fbc when 20-intel-crouton.conf is present.
Remove 20-intel.conf
Removed duplicate code, removed kali check, added some more comments in the code. Also fixed name for the link to 20-intel-crouton.conf.
Added xterm and X11-apps to precise release. Some cosmetic changes proposed by drinkcat