Import from GRUB Legacy (lib/device.c):
* util/i386/pc/grub-mkdevicemap.c (get_i2o_disk_name): New function.
(init_device_map) [__linux__]: Add support for I2O devices.
* util/i386/pc/grub-install.in: Skip menu.lst when removing
/boot/grub/*.lst.
* util/i386/pc/getroot.c: Don't recurse into dotdirs (e.g. ".static").
* util/i386/pc/grub-mkdevicemap.c: Make sure the floppy device exists
before adding it to device.map.