Changed overlap-save to skip useless memcpy in the beginning
Changed overlap-save to skip useless memcpy in the beginning

vmarkovtsev/veles.simd,vmarkovtsev/veles.simd,Samsung/veles.simd,Samsung/veles.simd,vmarkovtsev/veles.simd,vmarkovtsev/veles.simd,Samsung/veles.simd,Samsung/veles.simd