Zabcon custom commands

[Andrew Nelson]

I have put out an example of how the functionality of Zabcon can be
expanded through the use of custom commands:
http://trac.red-tux.net/browser/trunk/ruby/zabcon/custom_commands

zabbix_get_graph.rb creates the command "zabbix get graph" which allows
you to pull a graph from the zabbix frontend and save it to your local disk.

I'll be working on writing up something on this capability, in the
meantime if yo have any questions or suggestions let me know. :-)

-Andrew