Got some modules that needs some deprecating

I went through PEP 4 to find out what modules are slated for removal in Python 2.6 so I could add them to the release schedule for removal.

Turns out there are a bunch of email-related modules that have not received their DeprecationWarning yet. This is because no one has gone to the trouble to remove their usage from the stdlib. Unfortunately that means that they will, at best, get a deprecation warning in Python 2.6 and be removed in 2.7. But that is assuming someone gets around to adding the DeprecationWarning in the first place. Another thing to add to the todo list.