sudo in the base system

[Robert Nagy]

Hi. I'd like to see sudo in the base system, because it is the right
place for it. The diff adds sudo to usr.bin with the same features
and options that in the FreeBSD port, so there should be no functional changes.

http://leaf.dragonflybsd.org/~robert/sudo/sudo.diff
http://leaf.dragonflybsd.org/~robert/sudo/README.DRAGONFLY
http://leaf.dragonflybsd.org/~robert/sudo/README.DELETED

The diff should apply cleanly from /usr/src.
You need to fetch distfile yourself and telete everything that is
in README.DELETED.

Robert