As reported by Deon on DOVE-net, when the call to socket_recvdone() returns
true (socket is disconnected and all data has been recv()ed), dial() would
report "NO CARRIER" but leave the open socket opened, thus preventing any
subsequent dial attempt ("Can't dial: Already connected" and "ERROR").

Also removed the source file path/name from the debug print statements - don't
need that noise.

Incremented the version to 0.4