Initial x265 integration. Patch by Zhang Zhiqiang. Thanks!

Build with --enable-x265 (requires CMake).

Use via HandBrakeCLI with -a none -e x265 -f raw

Only raw HEVC output is supported for now (no audio or subtitles).


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6023 b64f7644-9d1e-0410-96f1-a4d463321fa5