[Libreoffice] First build from sources

[Thomas Klausner]

Next problem:
clone/bootstrap/fetch_tarballs.sh has:
if [ "$md5sum" = "md5" ]; then
    md5special=-r
fi

And later:
                    sum=`$md5sum $md5special $i | sed "s/ .*//"`
but NetBSD's md5 doesn't support -r. On a Linux I checked it's not
support either (but there, md5 points to md5sum).

Which operating system's md5 has that -r option, and what does it do?
 Thomas