correct module names for multiple _deprecated_class_method_option

[TaiSakuma]

When _deprecated_class_method_option() or _deprecated_func_option() is used multiple times on the same method or function, module_name of the outer decorator will be the module name of the inner decorator, that is deprecation.

• need to check if the decorated function is already decoreated and properly set module_name to the module name of the original function.