Message 57561 - Python tracker

If you haven't checked this in by tomorrow morning, I'll submit issue
1378 (socket3.diff) first, and you'll have to do a bunch of cleanup. 
Or, if you like, I can submit that now and you can do the cleanup this
afternoon.  (Basically, we can dup() sockets on Windows now, so all the
nonsense about keeping our own reference counts is no longer needed --
makefile() just hangs on to a dup() of the socket. This restores the
semantics we had in 1.5.2...