In crosser development, paths for installed Qt6 headers and plugins were changed. Update freeciv installer_cross scripts to match. Since Qt6 is not supported by current stable release of crosser at all, this does not have any change on our use of it.
In crosser development, paths for installed Qt6 headers and plugins were changed. Update freeciv installer_cross scripts to match. Since Qt6 is not supported by current stable release of crosser at all, this does not have any change on our use of it.