[rt-users] emails on ticket updates not being sent in 4.0.6

[Jeff Blaine]

Will also add to the data that our *other* RT instance
running 4.0.6 now, on a RHEL 6.2 box, with mod_perl as
well... works fine.

[ In contrast to our 3.8.10 + security patches on RHEL ]
[ 5.8 where web UI -> email broke                      ]