* all mathutils types now have optional callbacks * PyRNA returns mathutils quat and euler types automatically when they have the rotation subtype. * PyRNA, reuse the BPy_StructRNA PyObject rather name making a new one for each function returned. * use more arithb.c functions for Mathutils quaternion type (less inline cruft). * BGE Mathutils integration mostly finished- KX_PyMath now converts to Mathutils types rather then lists. * make all mathutils types share the same header so they can share a number of functions - dealloc, getWrapped, getOwner.