Implement SIMD.float32x4.load on top of Float32Array._getFloat32x4
Change SIMD load/store runtime implementations to typed array load/store
Implement more typed array SIMD load/store.
Fix SIMD load/store bounds check
Seperate the typed array load/store JS functions to get right this object.
Inline BuiltinMethod in polymorphic call to handle SIMD load/store for
different typed arraies
Rewrite SIMD type load/store operations to typed array SIMD load/store
Fix Int8Array SIMD load store fixed eax register usage.
update simd128.js
Change names
avoid unneeded change.
Fix coding style
Fix redundent code
Add more test cases.