Add _mm_testz_si128, _mm_testc_si128 and _mm_testnzc_si128
Add _mm_testz_si128, _mm_testc_si128 and _mm_testnzc_si128

This should work for any 128 bit sized vector, but it only accepts i64x2 for now

rust-lang/stdarch,rust-lang/stdarch,rust-lang/stdarch,rust-lang/stdarch,rust-lang/stdarch