Enhanced the input system to support concurrent dispatch of touch
events on multiple displays which is required for this to work.
Add method to apply offset to PointerCoords.
Change-Id: I55fe4a9a8785ae5a2d3341d214fa3c5107f3963a
Add all of the underlying input system pieces, minux PointerController and
SpriteController, to inputflinger. This is in preparation for moving input to
its own process and the addition of the input HAL.
Try 2.
Change-Id: I5f571fe86eb570885ae994e1f0552fb558930346