Bug#660257: fix Automatic proxy configuration in wheezy

[Petter Reinholdtsen <pere@hungry.com>]

I've tested the proxy tool in the libproxy-tools package, and it seem
to work similarly to how our wpad-extract is working:

  root@minerva:~# proxy http://www.debian.org/
  No protocol specified
  http://webcache:3128 direct://
  root@minerva:~#

There is no manual page for the tool, no --help option and its output
when run with a URL as an argument is slightly confusing.  Anyone know
how to properly use this tool?
-- 
Vennlig hilsen
Petter Reinholdtsen