macports.tcl: On macOS 10.14 Mojave, do not complain about the default setting for universal_archs.
macports.tcl: On macOS 10.14 Mojave, do not complain about the default setting for universal_archs.

danchr/macports-base,danchr/macports-base,neverpanic/macports-base,macports/macports-base,macports/macports-base,neverpanic/macports-base