SIMD on Windows

[Jonathan Dunlap]

I did watch Manu's a few days ago which inspired me to start this 
project. With the updates in http://dpaste.dzfl.pl/fce2d93b, I'm 
still a bit clueless as to why there is almost zero performance 
difference... considering that is seems like an ideal setup to 
benefit from SIMD. I feel that if I can't see gains here: that I 
shouldn't bother using them in practice, where sometimes 
non-ideal operations must be done.