6344272 re-think how whole disks are stored

[eric.schr...@sun.com]

Author: eschrock
Repository: /hg/onnv/onnv-gate
Revision: 5b1aef2832e5d76482321dff2293fd3625768b6b
Log message:
6344272 re-think how whole disks are stored

Files:
        update: usr/src/cmd/zpool/zpool_main.c
        update: usr/src/cmd/zpool/zpool_util.c
        update: usr/src/cmd/zpool/zpool_util.h
        update: usr/src/cmd/zpool/zpool_vdev.c
        update: usr/src/uts/common/fs/zfs/sys/vdev_impl.h
        update: usr/src/uts/common/fs/zfs/vdev.c
        update: usr/src/uts/common/fs/zfs/vdev_disk.c
        update: usr/src/uts/common/fs/zfs/vdev_label.c
        update: usr/src/uts/common/sys/fs/zfs.h