request for added feature be commited: duende pid file

[Sam Trenholme]

> To fix this, I've added a PID file feature to the duende. I figured, all good daemons have it, why doesn't yours? :-)
> I've successfully compiled and tested the code, and am using it myself, so it's ready to go.

Before I even look at your code, I need to know under what license
you're releasing this code.  I also would like to see this as a patch
against the currently existing Duende instead of a rewrite.

Take care,

- Sam