UKSM-0.1.2.2 for linux-3.7
Merge branch '3.7/uksm' into 3.7/master
 Add LZ4 compression method to btrfs, see git://repo.or.cz/linux-2.6/btrfs-unstable.git dev/compression/lz4
Merge branch '3.7/btrfs-lz4' into 3.7/master