v3.1 for Ryzen, FX, A-Series, Pentirum Silver

This build is improved performance very slightly. or not.
build by gcc 8.2.1

minerd-avx-sha for Ryzen
minerd-avx-xop for FX, A-Series
minerd-ssse3-sha for Pentirum Silver

v3.0 for specific CPU

This build is improved performance very slightly. or not.
build by gcc 8.2.0

minerd-avx-sha for Ryzen
minerd-avx-xop for FX, A-Series
minerd-ssse3-sha for Pentirum Silver

SHA extensions implemented

SHA拡張命令の実装を追加しました。
Ryzen専用です。
その他のCPUでは基本的に動作しません。

SHA extensions implemented cpuminer-yescrypt
only for Ryzen