merged from trunk 20741:20848

* Missing changes to release/windows/installer
* Sequencer fixes in source/blender/src/seqaudio.c dont apply to 2.5
* brechts fix for #18855 r20763 wasnt merged, does this apply to 2.5?

source/gameengine/Rasterizer/RAS_LightObject.h

@@ -39,8 +39,9 @@ struct RAS_LightObject
 		LIGHT_NORMAL
 	};
 	bool	m_modified;
-	int	m_layer;
+	int		m_layer;
 	void	*m_scene;
+	void	*m_light;
 	
 	float	m_energy;
 	float	m_distance;
@@ -55,7 +56,6 @@ struct RAS_LightObject
 	float	m_spotblend;
 
 	LightType	m_type;
-	MT_CmMatrix4x4*	m_worldmatrix;
 	
 	bool	m_nodiffuse;
 	bool	m_nospecular;