* util/i386/pc/getroot.c (grub_guess_root_device): Stop using
grub_util_biosdisk_get_grub_dev to convert system device to GRUB device.
* util/grub-emu.c (main): Use grub_util_biosdisk_get_grub_dev with the
string returned by grub_guess_root_device.
* util/i386/pc/grub-setup.c: Likewise.
* util/i386/pc/grub-probefs.c: Likewise.
* util/i386/pc/grub-probefs.c: Rename to ...
* util/i386/pc/grub-probe.c: ... this.
* DISTLIST: Remove grub-probefs, add grub-probe.
* conf/i386-efi.rmk: Likewise.
* conf/i386-pc.rmk: Likewise.
* util/i386/pc/grub-install.in: Likewise.
* util/i386/pc/grub-probe.c: Add --target=(fs|device|drive) option to
choose which information we want to print.