* Minor fix: uninitialized variables for bbu=0
* Typo fix: "other error count" instead of "media error count"
* Output STATUS variable for nagios performance data processing
* Add commandline options to define warning threshold for media errors, other
errors, predictive fail count and shield count
* Set state to critical for non-optimal virtual/logical disks
Signed-off-by: Georg Schönberger <gschoenberger@thomas-krenn.com>