update cashew
accept 'cleanup' as a native optimizer-friendly pass
convert asmLastOpts to native optimizer
add test for asmLastOpts without last
asmLastOpts fixes
update cashew
enable asmLastOpts to native optimizer
fix nasty little bug in Module.ccall
Merge pull request #3028 from NWilson/ccall_fix

fix nasty little bug in Module.ccall
fix docs link; fixes #3026
Add test for SSE1 intrinsics support.
Update SSE1 test to manually align, since emcc/clang is not able to with __attribute((align(16)). Fix typo in _mm_div_ss test.
Add test for _mm_movemask_ps.
Complete the SSE1 test suite by filling in the TODOs.
Mark down an alias.
Mark MMX-interacting instruction _mm_movemask_pi8.
Add missing stdlib.h from test_sse1.cpp
Add a test file for computing the maximum value of a large array with and without SIMD.
Implement more SSE1 benchmarking.
Add #define TEST_M64 mode to test_sse1.cpp to control whether MMX is tested or not.