All users updated.
(find_bestub): Determine correct size.
(fill_vdev_info_real): Fill ashift. New argument. All users updated.
(scan_disk): Align the size down.
Call check pool before find_bestub to have ashift.
Note: real text was accidently commited 2 commits ago.
Also-By: Richard Laager <rlaager@wiktel.com>
Also-By: Vladimir Serbinenko <phcoder@gmail.com>