ServerSocket.java: Define ANY_IF.

        * java/net/ServerSocket.java: Define ANY_IF.
        (ServerSocket (int,int)): Use ANY_IF instead of null to bind to
        all network interfaces.
        * java/net/DatagramSocket.java (DatagramSocket): ditto.
        * java/net/natPlainSocketImpl.cc (bind): Expect 0.0.0' instead of
        null.
        * java/net/natPlainDatagramSocketImpl (bind): Expect 0.0.0'
        instead of null.

From-SVN: r28429