TypeDef: replace Int64 with int64_t
TypeDef: replace UInt64 with uint64_t
TEncBinCABAC: fix naming prefix convention of bIsCounter
added pixel_add_ps_c as a primitve
unit test code for pixel_add_ps
asm code for pixeladd_ps_4x4 and testbench integration
asm code for pixel_add_ps, 4x8 and 4x16
pixeladd8.asm, int replaced with intptr_t for strides data type
added pixel_add_ps chroma function definitions
pixel_add_pp: 4x8, 4x16, merged movd and pmovzxbw instructions
pixel_add_pp_4x4, merged movd and pmovzxbw
asm code for pixel_add_ps_4x2
pixel.h and primitives.h, int replaced with intptr_t
pixel_add_ps_8x2, asm code
pixel_add_ps_8x4, asm code
pixel_add_ps_8x6, asm code
pixel_add_ps, 8x8, 8x16, 8x32 asm code