PyRNA API support for matrix types as Mathutils matrix (with callbacks) rather then a generic rna sequence of floats.

Any 3x3 or 4x4 rna matrix will automatically be returned as a Mathutils matrix.
This makes useful stuff like multiplying a vector location by an object matrix possible.
 ob = bpy.data.scenes[0].objects[0]
 print (ob.data.verts[0].co * ob.matrix)

Also added mathutils matrix types to the BGE GameObject.localOrientation, worldOrientation

* MT_Matrix3x3 added getValue3x3 and setValue3x3, assumed a 4x3 float array.
* KX_GameObject.cpp convenience functions NodeSetGlobalOrientation, NodeGetLocalOrientation, NodeGetLocalScaling, NodeGetLocalPosition.
* 2.5 python api now initializes modules BGL, Mathutils and Geometry
* modules py3 PyModuleDef's use PyModuleDef_HEAD_INIT, rather then {}, was making msvc fail to build.
* added macros for Vector_ReadCallback, Vector_WriteCallback etc. to check if the callback pointer is set before calling the function.

source/blender/python/intern/bpy_interface.c

@@ -37,6 +37,11 @@
 #include "BPY_extern.h"
 
 #include "../generic/bpy_internal_import.h" // our own imports
+/* external util modukes */
+
+#include "../generic/Mathutils.h"
+#include "../generic/Geometry.h"
+#include "../generic/BGL.h"
 
 
 void BPY_free_compiled_text( struct Text *text )
@@ -61,11 +66,17 @@ static void bpy_init_modules( void )
 	PyModule_AddObject( mod, "types", BPY_rna_types() );
 	PyModule_AddObject( mod, "props", BPY_rna_props() );
 	PyModule_AddObject( mod, "ops", BPY_operator_module() );
-	PyModule_AddObject( mod, "ui", BPY_ui_module() ); // XXX very experemental, consider this a test, especially PyCObject is not meant to be perminant
+	PyModule_AddObject( mod, "ui", BPY_ui_module() ); // XXX very experimental, consider this a test, especially PyCObject is not meant to be permanent
 	
 	/* add the module so we can import it */
 	PyDict_SetItemString(PySys_GetObject("modules"), "bpy", mod);
 	Py_DECREF(mod);
+
+
+	/* stand alone utility modules not related to blender directly */
+	Geometry_Init("Geometry");
+	Mathutils_Init("Mathutils");
+	BGL_Init("BGL");
 }
 
 #if (PY_VERSION_HEX < 0x02050000)