specify the owning module in super_delegate to ensure the 'super' lookup checks the delegate index

if you use multiple modules which use the same method names, you'll need to specify who owns them in the call to
super_delegate. I'd rather infer the name, but that doesn't currently seem possible.

With only 2 delegates containing the same module, plain 'super_delegate' will work. With more
than 2, you'll need to specify the owner in the call like 'super_delegate(MyModule)' where
MyModule is the name of the current module definding that particular method.