Added support for CABAC entropy coding.
Added support for B slices.
Fixed an issue in rate control constant QP mode.
Change-Id: Ib759d35e8e943f941aa9b8bbff0362d92c619994
Resolved warnings seen in x86 modules
Fixed alignment of few modules
Updated comments in few arm modules for consistency
Fixed warnings seen in clang build
Change-Id: I0623169b5e84a6a6f09c3d2212e754101272f5e9