Commit 33ce0b5e716d760fda44af1622cd6a94d65e8aa9

DRC 2018-03-01T10:38:17

Loongson MMI SIMD extensions Based on: https://github.com/zhuchen1911/libjpeg-turbo/commit/42aff4497bdaca3258279cafc74511e3c25454b8 Closes #158