[Omniprint-user] debian

[Rafael A. de <raf...@ic...>]

This patch add support for building Debian packages.
I have also changed some things that are incommon in Debian. As for example, installing in /opt.

This has not been tested except for my particular system (Epson LQ-570+).
There may be policy violations (http://www.debian.org/doc/debian-policy/).

By the way, thanks for this program. My printer never worked so well 
(even in Windows 3.1, 95 or NT).