increase touch sensitivity

Change-Id: I77e6aeca3667808e630dc142a2e561d3ddddef80
bootanimation: allow using RGB565 instead of ARGB8888

RGB565 uses considerably less memory, and together with texture
cache, it allows us to offer a really smooth bootanimation on
not so powerful devices.

Change-Id: I5c977a835583df2ec82214919223b640f52fd9d6
Optimized ALL OGG audio files for a 6.6MB savings!

Change-Id: I403b29674bd19fea113e9e5ab093ff1f56d11107