Treat CCISS drive number (N in -d cciss,N) as index into array of

available physical drives (starting at 0).  May help if certain drives
in an array are not accessible.


git-svn-id: https://smartmontools.svn.sourceforge.net/svnroot/smartmontools/trunk@2398 4ea69e1a-61f1-4043-bf83-b5c94c648137