ports/166117: add knobs in math/grace to make features selectable and the whole port comipleable on i386

[cs at FreeBSD.org]

Synopsis: add knobs in math/grace to make features selectable and the whole port comipleable on i386

Responsible-Changed-From-To: freebsd-ports-bugs->cs
Responsible-Changed-By: cs
Responsible-Changed-When: Mon Jun 11 21:47:14 UTC 2012
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=166117