Add SSE _mm_store* intrinsics and _mm_move_ss (#115)
Add SSE _mm_store* intrinsics and _mm_move_ss (#115)

* Add _mm_store* intrinsics and _mm_move_ss

* Fix Win64 & Linux i586 failures

* Make i586 codegen happy without breaking x86_64

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