Add better support for devfs devices.

Use GNU autoconf script to configure things that may change (e.g.
getopt_long, Linux v.s. SunOS) and generate Makefile.

Look at internationalization of output messages. Giuseppe De Marco
<gdm@rebel.net> has sent me an Italian version of the docs and source
code, but I'd like to do it properly (probably using GNU gettext).

Make a (limited) version for SunOS and Solaris.

Add ZIP drive read/write functions (from ziptool).

Open SourceForge project :-)
