mathlib AlmostEqual() and warning fixes

8238183
There's a bug in the mathlib function AlmostEqual(vector&, vector&, int) where incorrect parameters are sent to the contained function call. This is causing AlmostEqual to always return true as it is comparing a vector with itself. 

The sp and mp code was changed along with a mathlib recompile on vs2010.

8b4b6f9
Warning fixes for mathlib and tier0. No recompile.