Most important change being:
dma - Fix security hole (#46)
Affecting DragonFly 4.6 and earlier, Matt Dillon fixed this in base after
finding out from BSDNow Episode 152. Comments following were from his commit
which explains better than I. Just taking his change and putting it here as well.
* dma makes an age-old mistake of not properly checking whether a file
owned by a user is a symlink or not, a bug which the original mail.local
also had.
* Add O_NOFOLLOW to disallow symlinks.
Thanks-to: BSDNow Episode 152, made me dive dma to check when they talked
about the mail.local bug.
MFC After: 2 days
Simplifying maintainance and options (only one place to deal with MK_DMAGENT)
This also makes packaging base less intrusive by getting a single point where
to add tags.
