drafts/queue and edited messages.

[Harry Putnam <reader@newsguy.com>]

This has come up a few times but I've lost track of any resolution to
it.

Using a semi-stock outgoing message archive and then several
particular groups where I've set gcc in the group params.

If I happen to edit a message that has collected in
~/News/drafts/queue

The archived or gcc'ed copy is no longer a faithful copy.

Is this just unavoidable or can we have code that governs drafts/queue
and knows where the message came from, its file number and whether
it is gcc'ed?  If so write them back to the sending group overwriting
the original.  Maybe the same with the global archive, if the message
is not gcc'ed.

Maybe make it a requirement for this code that all groups involved be
under that same backend.  Avoiding that major problem.