4.4 bringup
hwui/heap configuration for 1080p phones with 2048m

 * Increase heap start size to 16m to minimize GC with larger bitmaps

Change-Id: I8fbba2e5a2a2cf2d7a6898ca6bae8639d6cf5a19
Add GESTURE_SENSOR input source

Change-Id: If61a7e7bf2d8b2665db7ca57ed68a4462d0c1783
Support forcing all screenshots into a CPU consumer

Looks like a full GPU path is less efficient on some GPU
drivers that we're still using, and CPU is reliably faster...
(there's probably a locking condition going on somewhere, this
needs to be looked into)

Change-Id: I8878796a117d65bf2324507cf8755cadce49f6dc
Fix some char16_t vs. uint16_t bits

Change-Id: Ie2392098fa6b25f3c0713a7774929e36d824d26f
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>