Make teh msb of the cmdset variable indicate whether we detected the commandset from the trace or whether we used the default value from preferences.
indicate in the dissection of the packet whether the command set is "known" or whether we are using the default one.
make scsi srt stats work even for when we are using the "default" dommandset. Previously scsi srt would ignore all pdus for itl sessions where the "default" command set was used.
svn path=/trunk/; revision=18098