Forward-port surface dithering from CM10.2

This allows the use of 16-bit color displays without excessive color
banding;

Change-Id: Icb469b9cb4beb686516c60bb576dbd0a73f505e0
hax: Add back the SURFACE_SKIP_FIRST_DEQUEUE legacy EGL workaround

Set BOARD_EGL_SKIP_FIRST_DEQUEUE to use

Change-Id: I46257a7e9e6b6e093a5cb92eaaaef4bdd0435a12

Conflicts:
	libs/gui/Android.mk