MS 4.23-11: buglet in update_virus_scanners

[Jeff A. Earickson]

Julian,
   I just upgraded from 4.22-5 to 4.23-11, and update_virus_scanners
gagged the first time cron ran it on my Solaris 9 box.  It turns out
the /usr/bin/grep on Sun does not support the "-e" option, while
GNU grep (/usr/local/bin on my box) or /usr/xpg4/bin/grep does.
So I had to tweak my copy to use GNU grep.  I don't how you want to
fix this for all permutations of grep.  What a pain.

--- Jeff Earickson