Update to 6.2.1.
This gains compatibility with X.Org 6.8, but breaks it with XFree86 4.4,
so flip the IGNORE switch.
Since there is no "install" target we can use, installation is done in
do-install of port. For that we need the list of files to install which is
conveniently used to generate plist, so static pkg-plist is dropped.