defaults both in regards to the size of the partitions that are created
and in regards to safety and functional separation.
Still TODO: extend the previous partition to cover a deleted partition
if the previous partiton was auto-created, and supply some sort of
solution for /tmp.
Reviewed by: Just about everyone
Approved by: Nobody except maybe my pet mouse fred
Obtained from: God, so complain to HIM
MFC after: 1 week