cleanup now-sure-to-be-useless commented code
mv only
always initialize keycode et al on win32
check if keycode exists first, since keystate can be outta whack
"Once more, with feeling" after d16c30031cce36cca8f156551b36aae0d589dfa4

I hate quaternions.  I hate quaternions.  I hate quaternions.
I hate quaternions.  I hate quaternions.  I hate quaternions.
I hate quaternions.  I hate quaternions.  I hate quaternions.

Less hairy math, the better.