8015692: java.net.BindException is thrown on Windows XP when HTTP server is started and stopped in the loop. Summary: join the dispatcher thread in the ServerImpl.stop method to ensure Dispatcher is finished prior to exiting stop(). Reviewed-by: chegar

Compiled from "HelloWorld.java"
public class HelloWorld extends java.lang.Object{
    public HelloWorld();
    public static void main(java.lang.String[]);
    public native void test();
}