new Trace addition for Tango, plus log.format()

[Robert Fraser]

Kris Wrote:

> At runtime, for instance, you can hook an administrative web-page (package 
> is provided) into your application to dynamically configure log-output at 
> runtime. When combined with remote-logging to an network application such as 
> Chainsaw, the combination enables dynamic & interactive monitoring of remote 
> processes. This is often more useful than generic traces to the local 
> console.
> 
> - Kris 

I never thought of using Chainsaw with Tango's logging! Any special configuration for that?