Fake: This should never have had the fake_canvas_set API. It already can
not work after efl_finalize. And Ecore_Evas isn't part of EO API so it
doesn't make sense at this point to try to expose the fake window as
part of EO API.
Socket: This is the only type of window that implements socket_listen.
So we can just move this function to a new subclass.
NOTE: Socket & plug are currently broken, even in 1.20 (at least for me)!
Ref T5322
Jean-Philippe Andre