Comment 1 for bug 677758

We shouldn't need to include part_msdos explicitly. make_image does:

    (for i in $(cat ${source_directory}/partmap.lst) ${modules} ; do
        echo "insmod $i"
    done ; \

If part_msdos isn't showing up, I suspect there's something wrong with the build system for grub-rescue-efi-amd64 as well.