Python Bugfix,

Setting the user preference for python scripts didnt add the bpymodules subdirectory to sys.path (python module search path).
Also problems with entering and exiting- the old path was used until next restart.

source/blender/python/BPY_extern.h

@@ -85,6 +85,7 @@ extern "C" {
 	void BPY_post_start_python( void );
 	void init_syspath( int first_time );
 	void syspath_append( char *dir );
+	void BPY_rebuild_syspath( void );
 
 	int BPY_Err_getLinenumber( void );
 	const char *BPY_Err_getFilename( void );