Enum and Compound changes

Fixed a few enum types to bitflags.  Renamed some compounds to match the types in engine.  Removed MTransform because it doesn't exist.  The NiAVObject transform is simply an NiTransform written out of order.   Switched types to use NiQuatTransform where applicable.

Made an NiPlane compound to match the type used in engine.   Switched types to use NiPlane where applicable.

Removed some unused compounds and commented code.