BGE pyAPI update

(adding "when accessing it from the Game Engine use Mathutils instead of Blender.Mathutils" message in Blender pyAPI doc)

source/blender/python/api2_2x/doc/BGL.py

@@ -7,6 +7,7 @@ B{New}: some GLU functions: L{gluLookAt}, etc.
 
 The Blender.BGL submodule
 =========================
+(when accessing it from the Game Engine use BGL instead of Blender.BGL)
 
 This module wraps OpenGL constants and functions, making them available from
 within Blender Python.

source/blender/python/api2_2x/doc/Geometry.py

@@ -5,6 +5,7 @@ The Blender.Geometry submodule.
 
 Geometry
 ========
+(when accessing it from the Game Engine use Geometry instead of Blender.Geometry)
 
 This new module provides access to a geometry function.
 """

source/blender/python/api2_2x/doc/Mathutils.py

@@ -5,6 +5,7 @@ The Blender.Mathutils submodule.
 
 Mathutils
 =========
+(when accessing it from the Game Engine use Mathutils instead of Blender.Mathutils)
 
 This module provides access to matrices, eulers, quaternions and vectors.