kernel: stable/longterm updates

 - longterm: 3.4.83  -> 3.4.85
 - longterm: 3.10.33 -> 3.10.35
 - longterm: 3.12.14 -> 3.12.15
 - stable:   3.13.7  -> 3.13.8

NOTE: This will break the testing grsec kernel at the moment (there's
not a 3.13.8 patch yet), but it's destined to be upgraded to 3.14 soon
anyway.

Signed-off-by: Austin Seipp <aseipp@pobox.com>
libyaml: minor update to fix CVE-2014-2525
bittorrentSync: use versioned url for download
gnome-screenshot: new package

Utility used in the GNOME desktop environment for taking screenshots

http://en.wikipedia.org/wiki/GNOME_Screenshot