ports/107160: update irc/ircservices: don't build it on the sparc64

[Edwin Groothuis]

Synopsis: update irc/ircservices: don't build it on the sparc64

Responsible-Changed-From-To: freebsd-ports-bugs->shaun
Responsible-Changed-By: edwin
Responsible-Changed-When: Sun Dec 24 01:00:53 UTC 2006
Responsible-Changed-Why: 
shaun@ wants to have sparc64 and 4.x PRs

http://www.freebsd.org/cgi/query-pr.cgi?pr=107160