Mostly just tidy up, catching pages that I missed the first time round.
A small number of pages were given a bit more reformat. A bit beyond
the remit of this merge request but not too much has been changed.
-) LAN and USB communication
-) SNMP LAN auto-detection (using libsnmp, added configure check!)
-) Based on the epson2 backend, with many structural changes
-) B/W, Gray, Color scanning works in 150/300/600dpi (full-page
color scan only possible with <=300dpi)
-) The timeouts (SNMP, scan data, other data) are configurable in the
magicolor.conf file
-) Keeps list of known scanners in sane_get_devices, does not destroy
existing handles; Also correctly calls sanei_usb_init.
Ralph Little