Mail> room read prompt doesn't wait properly for X messages

[dgets]

The loop needs to be thrown in here, or better yet ripped out of the multiple locations where it's used, and modularized. If anything, it might have to be passed a parameter, to make sure that it's using the correct behavior, per message base/menu level that it's at at the time. Then again, maybe with the messages countdown read prompt, and the generalized prompt, there is a case for two of them, meaning adding a third, with special behavior isn't that bad of an idea, if overloading one of those will just add more obfuscation. We'll see where it goes.