Minor fix to Tw2MayaAnimationEngine
Minor fix to Tw2MayaAnimationEngine

- Instantiated prototype `_EvaluateBezier`'s variable `poly`  correctly and fixed it's component assignments
- Added the prototype `_EvaluateInfinities`  which throws a message for the rare occasions when it is called
ccpgames/ccpwgl,cppctamber/ccpwgl