This update for sane-backends fixes the following issues:

- updated sane-backends to 1.0.32:
  * Fixed double height image with the avision backend (bsc#1179065)
  * Removed udev rules mangling for USB devices (ATTR vs ATTRS)
  * Does no longer add SCSI id twice for EPSON Perfection 1640SU

Many more fixes came with this version bump. Please refer to the changelog file of this package.