[Nmh-workers] mhmail is now stable

[David Levine]

mhmail now has -header-field and -attach options.  I'm
done with it for the time being, assuming no bugs or
requests.

SYNOPSIS
mhmail [addrs ...] [-attach file] [-body text] [-cc addrs ...]
       [-from addr] [-header-field name:body] [-subject subject]
       [switches for post ... | -profile [switches for send ...]]
       [-resent] [-send | -nosend] [-version] [-help]

There can be multiple -attach and -header-field switches.

It has these differences from the old mhmail:
* Adds -send/-nosend, -header-field, and -attach options.
* Supports all post(8) (by default, without -profile) or send(1)
  (with -profile) options.
* Optionally (with -profile) obeys the users profile, including
  AliasFile and send entries.
* Instead of silently not sending an empty message, notifies user
  "mhmail: empty message not sent, use -body '' to force."
* The compiled mhmail dropped a trailing newline from the -body argument.
* Drops support for undocumented -queue option.

David