Update to reflect reality:
- The security-officer alias goes to three people, not four; there is
one member of the core team on the alias, not two.
- Our set of close working relationships includes DragonFlyBSD as well
as the older BSDs.
- We usually commit security fixes to HEAD and the security branches
(nearly) simultaneously; there is no longer a significant lag between
disclosure-via-CVS and the advisory being sent out.
With hat: secteam