raidstart fails if the first disk of an array is unusable

  Hi. I couldn't find out who currently maintains raidtools, hopefully
this patch will find it's way to him/her via this list.

  Following a Debian bug report about raidtools' strange behaviour,
Pontus Fuchs found and fixed the cause for a problem that you possibly
have experienced: raidstart won't start an array if it can't read the
superblock from the disk that is marked first in raidtab. As you know,
starting (for example) a two disk RAID-1 array shouldn't fail if the
first disk is can't be used but the second can.

  The fix is to simply try out all the devices mentioned in raidtab when
starting an array. A patch (mostly by Fuchs) against raidtools-20010914
is attached.

  (Please CC me, I'm not on the list)