1. Upgrade VAAPI to version 0.30 which has encode support
    2. Incorporate Gwenole Beauchesne's patches 102, 103, 104. 105, 106, 107, 109 and part of 202
       (see http://www.splitted-desktop.com/~gbeauchesne/libva/patches/)
    3. DRI2 support
Signed-off-by: Austin Yuan <shengquan.yuan@intel.com>