[Python-3000] PEP 3108 - stdlib reorg/cleanup

[Bill Janssen]

Nice job, Brett.  I only have two concerns:

As you don't quite note, the Mac "ic" module is the interface to the
"Internet Configuration" system on the Mac.  In particular, it's where
proxy information is drawn from.  We need to have that replacement
code in hand before "ic" is jettisoned.  You allude to that, but with
no detail.  I'd like to hear the detail.

> * mhlib
>
>  + Obsolete mailbox format.

The "mh" format is far from obsolete; in fact, it's (weirdly enough)
coming back into popularity as modern indexing engines start requiring
a one-message-per-file mail format.  And as modern file systems allow
that.  Systems like "nmh" and "Sylpheed" are under active development
and corresponding use.  I would take the code from the current "mhlib"
module that manipulates ".mh_profile" and mailbox-specific context and
add it to the "mailboxes.MH" module before dumping it.

Bill