search for: _policy_h

My port forwarding changes require an authorization (authentication) context in channel_connect_to(). I'd like to change the dispatch_* functions so that they accept an Authctxt * instead of a void * (this parameter is already used this way). In addition, I'd have to pass the authctxt all the way down to channel_connect_to(). As a side effect, it's possible to get rid of the global