JB_MR1: native/libs/ui: Adding fix for conf 2.0 seg faults

function call to cancelBuffer was resulted in seg-faults on conf 2.0.
Setting function pointer of cancelBuffer to null in order to select
correct path of execution.
CRs-fixed: 383715

Change-Id: I6de8355febaea86ded63f33a582c787fef862193
Overlay support for legacy camera libs

Move http://review.cyanogenmod.com/#/c/13285/ to proper place for jellybean.

1. Rename OverlayHtc to Overlay in file names
2. Use BOARD_USES_LEGACY_OVERLAY to enable

Signed-off-by: Evan McClain <aeroevan@gmail.com>
Change-Id: I705bc802c7280eda273e881612165c5d3c30ea26
Merge "Overlay support for legacy camera libs" into jellybean
Merge "JB_MR1: native/libs/ui: Adding fix for conf 2.0 seg faults" into jellybean