ports/70472: Update net/libdnet to 1.8

[Vanilla I. Shu]

Synopsis: Update net/libdnet to 1.8

State-Changed-From-To: open->closed
State-Changed-By: vanilla
State-Changed-When: Sun Aug 15 13:17:52 GMT 2004
State-Changed-Why: 
Committed, thanks.

http://www.freebsd.org/cgi/query-pr.cgi?pr=70472