In order for the Eject command to properly release the image and reset the status,
we need to override the Eject function with the appropriate logic
The other removable disk drive devices inherit the Disk class,
and hence do not need this
The scsictl command parser looks for single letter shorthands for each device type;
this adds 't' for SCTP and changes SCLP to 'p'
Now you can do '-t tape' and '-t printer' for an easy to remember command
Also moves the SCTP default product/vendor into the device factory,
updates the unit tests, and an overhauls the man pages
