Refactor and update.

Rebuilt a fair bit. Haven't touched grub-i386.cfg yet. All paths use an
_iso folder on the root of the drive to match my Zalman VE400 on which I
keep this.

Todo:
* update the update_kaspersky script to point to the correct file
* Try and fix a bunch of the non-working ISOs.
* See if it's possible to use grub2's drivemap insteat of grub4dos's
map.