Log Message:
Update to 1.0.8.
     * Network backend and saned update
     * Documentation updates
     * Bugfixes
     * updated backends: artec, avision, canon,
       dc240, epson, gphoto2, mustek, mustek_pp,
       mustek_usb, plustek, sharp, sm3600,
       snapscan, nec, umax, v4l
     * new backends: canon630u, canon_pp,
       coolscan2, fujitsu, leo, matsushita,
       sceptre, teco1, test