SystemUI: awful hack until Google fixes MDP

History:
Google adds tripple buffering in 4.1 - works splendid
Google merges changes in qcoms HAL in 4.2.2 that will trash the
composition engine in fullscreen mode

Change-Id: I6bfbac30e6b04c027d404f8026a9533681bcd4e7
Bug #14 disable pie on lockscreen

Change-Id: I4647aade6292cf49e5372e52d2ecff3bfe4b51f6
Some style fixes
Moar style fixes