Update sane-backends to 1.0.12. Changes include:
* Documentation updates
* Updated backends: apple, artec_eplus48u, as6e, avision, canon,
canon630u, dc210, dc240, dll, epson,
fujitsu (fi4220), gphoto2, gt68xx, hp,
mustek, mustek_pp, mustek_usb, net, pie,
plustek, snapscan, teco2, test, umax,
umax_pp
* New backends: ibm, ma1509, some versions of hp5400
* Added IPv6 support for saned and net backend
* Added SCSI support for MacOS X
* Build system improvements
* USB access improvements
* Portability fixes
* Translation updates and new translations: nl, no
* Bugfixes
3d8c217539