start script change to support smtp-auth patch

[Eric Walters]

I have installed/compiled the smtp-auth patch into my qmail installation,
but I cannot figure out what file to modify to add support for it.  I am
running qmail 1.03 on freebsd.  I tried adding it to
/var/qmail/supervise/qmail-smtpd/run, but it does not seem to take.

Any help would be greatly appreciated,

Eric