Bug#462563: sane-utils: Scanner only accessible under root

[Mike Brodbelt <mike@coruscant.demon.co.uk>]

I have exactly the same problem as the original reporter, with an Epson
RX620. It works fine as root, but fails as a non root user. Appropriate
entries under /proc/bus/usb are only accessible to root.

Using sane-utils 1.0.19-1 from sid.

Mike