fdisk implementation

[Matthew Dillon]

    A few possible gotchas regarding fdisk and disklabels.  DragonFly has
    a 64 bit disklabel feature now (disklabel64), as well as gpt support,
    but lacks boot support for either.

    I think the fdisk utility needs to be separate from the disklabel
    utility.

    Also as HAMMER moves more into the mainstream the recommended 
    partitioning scheme is to only have two partitions... a small UFS
    /boot, and everything else in a single HAMMER root.

						-Matt