Added support for compiling SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE 4.2 and
128-bit wide AVX intrinsics, emulated on top of Wasm SIMD instruction set.
(#11193, #11243, #11290, #11327). Pass -msimd128 -msse to enable
targeting SSE.
Removed obsolete SIMD.js support (-s SIMD=1). Use -msimd128 to target Wasm
SIMD. (#11180)
emscripten changelog version: 1.39.17: 06/05/2020