rna support for passing dynamic sized arrays to rna functions

using this for object.vertex_groups.assign([index list ...], group, weight, mode)

source/blender/python/intern/bpy_rna.h

@@ -77,7 +77,6 @@ PyObject *pyrna_struct_CreatePyObject( PointerRNA *ptr );
 PyObject *pyrna_prop_CreatePyObject( PointerRNA *ptr, PropertyRNA *prop );
 
 /* operators also need this to set args */
-int pyrna_py_to_prop(PointerRNA *ptr, PropertyRNA *prop, ParameterList *parms, void *data, PyObject *value, const char *error_prefix);
 int pyrna_pydict_to_props(PointerRNA *ptr, PyObject *kw, int all_args, const char *error_prefix);
 PyObject * pyrna_prop_to_py(PointerRNA *ptr, PropertyRNA *prop);