PyAPI RNA/BGE

* 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.

source/blender/python/generic/vector.h

@@ -37,15 +37,16 @@ extern PyTypeObject vector_Type;
 
 #define VectorObject_Check(v) (((PyObject *)v)->ob_type == &vector_Type)
 
-typedef struct {
+typedef struct { /* keep aligned with BaseMathObject in Mathutils.h */
 	PyObject_VAR_HEAD 
 	float *vec;					/*1D array of data (alias), wrapped status depends on wrapped status */
 	PyObject *cb_user;					/* if this vector references another object, otherwise NULL, *Note* this owns its reference */
-	unsigned char size;			/* vec size 2,3 or 4 */
-	unsigned char wrapped;		/* wrapped data type? */
 	unsigned char cb_type;	/* which user funcs do we adhere to, RNA, GameObject, etc */
 	unsigned char cb_subtype;		/* subtype: location, rotation... to avoid defining many new functions for every attribute of the same type */
-	
+	unsigned char wrapped;		/* wrapped data type? */
+	/* end BaseMathObject */
+
+	unsigned char size;			/* vec size 2,3 or 4 */
 } VectorObject;
 
 /*prototypes*/