o Compile-out "wizard" mode on ia64.

o  Compile-out "wizard" mode on ia64.
o  Also allow swap and filesystem partitions outside a freebsd slice.
   This is typically the case for GPT.
o  Allow chunks of type "whole" to be displayed at the top. This is
   to allow a GPT disk to be labeled. We need a slice out of which we
   can make partitions, but a GPT disk doesn't have slices. For GPT
   disks a chunk of type "whole" can then be used as a placeholder.