asm: enable 10bit chroma_vpp and chroma_vps interpolation filters
cmake: add i686 to x86 alias list (closes #33)

--HG--
extra : amend_source : 6ed0540462ea933897df5ef2cecda9d46eeffd62
api: change meaning of pic.stride to be in bytes rather than pixels (fixes #35)

x264's pic.plane pointer is a uint8_t* so their input strides are byte based,
ffmpeg is currently assuming our input strides are byte based.  This commit
will make that assumption correct.

This fixes non-4:2:0 YUV file read at the same time, and bumps X265_BUIDLD

--HG--
extra : amend_source : 9602ae397e3a630288d60d1e1fdc26f3ee1e3a0b
encoder: assign internal colorspce to output pic.colorSpace
primitives: cleaned up asm_primitives of intra_pred_ang
cmake: use x86 alias list rather than repeated string compares (nit)
param: add VBV info to log data
cli: move "fps" between resolution and frame rate, same as input file line