Revamping for listeners.

Revamping for listeners.

Split rs_connection into rs_baseconn plus rs_connection and rs_listener.

Connections now has a state variable.

Connect buffer event and fd of _source_ connection, not that of
conn->active_peer. The connection object referred to by a peer is not
meant for using as a connection, only for reporting errors on.

Make sure things are sane even when not using a config file.

Bump library interface version to 1.0.0 since it's changed.