fix bug for testbench string buffer overflow
split dequant to normal and scaling path
asm: code for sse_pp_12x16 routine
pixel_add_ps_12x16, asm code
pixel_add_ps_48x64, asm code
pixel_add_ps_64xN, asm code
asm-primitives.cpp, removed temporary function pointer initialization, generated through macro calls
asm: code for sse_pp_24x32 routine
asm: code of sse_pp routine for 48x64 and 64x16 blocks
TComYuv::addClip, integrated luma_add_ps
added blockcopy_sp function pointers
asm: code of sse_pp routine for 64x32, 64x48 and 64x64 blocks
TComYuv::addClipChroma, integrated pixel_add_ps function
pixelharness: fix the other header buffer
pixel: drop intrinsic sse_pp functions, we have ASM coverage