[MacPorts] #44526: update for xxdiff

#44526: update for xxdiff -------------------------+-------------------------------- Reporter: rjvbertin@… | Owner: macports-tickets@… Type: update | Status: new Priority: Normal | Milestone: Component: ports | Version: Keywords: haspatch | Port: xxdiff -------------------------+-------------------------------- Attached is a diff that updates the xdiff portfile to use the latest version, 4.0 (which builds against qt4-mac). I've moved the documentation (that includes a series of screenshots) to a +doc variant. -- Ticket URL: <https://trac.macports.org/ticket/44526> MacPorts <http://www.macports.org/> Ports system for OS X