Added VAEntrypointEncSliceLP for implementations to expose a low power/high performance variant of slice level encoding entrypoint.
Add vaSurfaceAttribUsageHint to give the driver a hint of intended usage to optimize allocation (e.g. tiling).
Add VAConfigAttribEncSkipFrame and corresponding structures to support sending skip frame parameters to the encoder's rate control, when the user has externally skipped frames.
Add Macroblock based rate control method.
Add Region-of-Interest (ROI) support for encoder based on user provided ROI rectangles.
Remove VAEncMBMapBufferVP8 and add explanation for input VP8 encoder segmentation buffer.
Image Stabilization Changes
vatrace: add trace for VP8 decoding
vatrace: dump 64 bytes of raw buffer (va_TraceVABuffers) by default

when VA_TRACE_FLAG_BUFDATA is set, dump the entire buffer