Applied Kurt J. Lidl <lidl@eng.us.uu.net>'s $MAILHOST patch:

    I have a small patch that would be nice to be included -- basically, it
    allows the usage of the "MAILHOST" environment variable, without having to
    have HESIOD turned on.  I need this functionality for my environment, where
    we have identical /usr/local on all my machines (so I cannot just hardcode
    into the mts.conf file), and I have multiple POP mail servers for my users.

Modified inc.man to reflect that along with "pophost:" and -host, $MAILHOST can
now activate POP mail inclusion as well.