Mathutils library for the python API

- support for quaternions, euler, vector, matrix operations.
- euler supports unique rotation calculation
- new matrix memory construction and internal functions
- quaternion slerp and diff calculation
- 2d, 3d, 4d vector construction and handling
- full conversion support between types
- update to object/window to reflect to matrix type
- update to types/blender/module to reflect new module

source/blender/python/api2_2x/Window.c

@@ -327,7 +327,7 @@ static PyObject *M_Window_GetViewMatrix(PyObject *self)
 		return Py_None;
 	}
 
-	viewmat = newMatrixObject (G.vd->viewmat);
+	viewmat = (PyObject*)newMatrixObject((float*)G.vd->viewmat, 4, 4);
 
 	if (!viewmat)
 		return (EXPP_ReturnPyObjError (PyExc_MemoryError,