Implemented a basic NIO socket channel interface. Non-blocking socket channels

and server socket channels are implemented.  This version works but only when
libnative is linked with g++ (because of C++ object creation code that fails
without this linking)

classpath/java/nio/channels/ServerSocketChannel.java

@@ -0,0 +1,39 @@
+package java.nio.channels;
+
+import java.net.InetSocketAddress;
+
+public class ServerSocketChannel extends SocketChannel {
+  public static ServerSocketChannel open() {
+    return new ServerSocketChannel();
+  }
+
+  public SocketChannel accept() throws Exception {
+    SocketChannel c = new SocketChannel();
+    c.socket = doAccept();
+    c.connected = true;
+    return c;
+  }
+
+  public Handle socket() {
+    return new Handle();
+  }
+
+  private int doAccept() throws Exception {
+    return natDoAccept(socket);
+  }
+
+  private int doListen(String host, int port) throws Exception {
+    return natDoListen(host, port);
+  }
+
+  public class Handle {
+    public void bind(InetSocketAddress address)
+      throws Exception
+    {
+      socket = doListen(address.getHostName(), address.getPort());
+    }
+  }
+
+  private static native int natDoAccept(int socket) throws Exception;
+  private static native int natDoListen(String host, int port) throws Exception;
+}