add scsiFetchTransportProtocl; move scsiFetchIECmpage() earlier in

DeviceScan() so it can bail if there is a bad response (USB heuristic)


git-svn-id: https://smartmontools.svn.sourceforge.net/svnroot/smartmontools/trunk@1245 4ea69e1a-61f1-4043-bf83-b5c94c648137