mh-smail calls send -msgid, which doesn't work

[geofft]

As pointed out by an OLC user, if I run emacs -e mh-smail, type in a message into the provided fields, and run C-c C-c to send the e-mail, I get

spost: -msgid unknown
send: message not delivered to anyone

We can either upgrade nmh to a version that supports the -msgid option (which adds a Message-ID: header to the outgoing mail), or wrap /usr/lib/debathena-nmh/spost to drop the -msgid option, or figure out how to make mh-smail not use the -msgid option.

[geofft]

This appears not to be an upgrade-relevant thing. As jfc pointed out in  bugs:27406, we need to set the emacs "mh-send-uses-spost-flag" variable, to indicate to emacs to use options that spost accepts, not that post accepts (not that I particularly know what these two or the difference between them is or why debathena-nmh is using spost and not post). I've done so in r24266.

At some point we may also want to take this and the other four lines of MH-E config and put that in the debathena-nmh package instead of debathena-emacs-config.

[geofft]

This was moved to production on January 21.