Add device type shorthand 't' for Tape, and change printer to 'p'

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

cpp/devices/scsi_streamer.cpp

@@ -79,8 +79,6 @@ SCSIST::SCSIST(int lun)
 	SetRemovable(true);
 	SetLockable(true);
 	SupportsSaveParameters(true);
-	SetVendor("TANDBERG"); // Masquerade as Tandberg
-	SetProduct(" TDC Streamer");
 }
 
 bool SCSIST::Init(const param_map &pm)