- lazy subtype initialization rna, was initializing every type in bpy.types at startup, which is slow and doesn't allow access to dynamically added types.

- bpy.types isnt a module anymore, defined as its own PyType, getattr looks up the rna collection each time.
- refcounting fixes
- fixe epydoc generation with undefined values

source/blender/python/intern/bpy_rna.h

@@ -61,6 +61,9 @@ typedef struct {
 	PropertyRNA *prop;
 } BPy_PropertyRNA;
 
+/* cheap trick */
+#define BPy_BaseTypeRNA BPy_PropertyRNA
+
 PyObject *BPY_rna_module( void );
 /*PyObject *BPY_rna_doc( void );*/
 PyObject *BPY_rna_types( void );