How do I turn on ediff menus?

The ediff help still says ediff menus are supposed to appear under the Tools menu: Compare, Merge, and Apply Patch. I can't see the menus in V21 even after loading ediff. There is a also bigger question. Obviously with the new package philosophy the appearance of the menus are dependendt on the availability of the package. The autoload files serve nicely by defining commands based on the availability of the package. Shouldn't they do the same for the menus? In other words, if a package is installed, I'd expect the see its menu entries automatically appearing. What is the recommended way of addressing this dilemma? Is the package maintainer expected to put menu definitions into autoloads, or is the user expected to load the whole package just to install the menus?