Use of proper fixed-width types when appropriate

[Ericson2314]

Be forewarned that Ken only included "unsigned" half the time he meant it.

[Lensman]

Was he using overflows in his algorithms for speed?

[Ericson2314]

I have no clue. I think most of the stuff can be done the same way with better types, but I am not sure. More there is just some edge case sneaking out.