ports/78316: Update port: math/ploticus to 2.31

[Volker Stolz]

Synopsis: Update port: math/ploticus to 2.31

Responsible-Changed-From-To: freebsd-ports-bugs->linimon
Responsible-Changed-By: vs
Responsible-Changed-When: Thu Mar 3 09:27:11 GMT 2005
Responsible-Changed-Why: 
Over to maintainer.
One suggestion: Maybe instead of 'pl' this port should install
'ploticus' to avoid the CONFLICTS?

http://www.freebsd.org/cgi/query-pr.cgi?pr=78316