Pull up following revision(s) (requested by tsutsui in ticket #649):
distrib/utils/sysinst/msg.mi.es: revision 1.48
distrib/utils/sysinst/arch/i386/Makefile: revision 1.18
distrib/utils/sysinst/msg.mi.en: revision 1.176
distrib/utils/sysinst/arch/amd64/Makefile: revision 1.8
distrib/utils/sysinst/msg.mi.de: revision 1.71
distrib/utils/sysinst/msg.mi.fr: revision 1.130
distrib/utils/sysinst/util.c: revision 1.180
distrib/utils/sysinst/msg.mi.pl: revision 1.87
Make the default choice of "Install from" menu to use the sets
in the default file system (assuming which come with the CD/USB image)
and skip distmedium menu if the root file system is not md(4).
Also change "CD-ROM / DVD" menu option accordingly on ports which
have install images. PR/47038
XXX: still no responsible maintainer of non-en translations