subtype support for properties in bpy.props.

source/blender/python/intern/bpy_rna.h

@@ -80,6 +80,7 @@ int pyrna_pydict_to_props(PointerRNA *ptr, PyObject *kw, int all_args, const cha
 PyObject * pyrna_prop_to_py(PointerRNA *ptr, PropertyRNA *prop);
 
 PyObject *pyrna_enum_bitfield_to_py(struct EnumPropertyItem *items, int value);
+int pyrna_set_to_enum_bitfield(EnumPropertyItem *items, PyObject *value, int *r_value, const char *error_prefix);
 
 /* function for registering types */
 PyObject *pyrna_basetype_register(PyObject *self, PyObject *args);