Zeroconf support for streamdev plugin

[jkyro at korjaussarja.net (Jaakko Kyro)]

I made a small patch that adds Zeroconf support to the streamdev plugin. It 
uses the Avahi mDNS implementation to advertise the HTTP streams.

The patch can be found here:
http://www.korjaussarja.net/vdr/

-- 
-jaakko