Issue #960 - Async I/O spin when reading early EOF.

Now testing the return value of onEarlyEOF() and calling the
application when the value is true.
This means that the application can now consume the early EOF and the
spin does not happen.

jetty-server/src/main/java/org/eclipse/jetty/server/HttpChannelOverHttp.java

@@ -222,8 +222,8 @@ public class HttpChannelOverHttp extends HttpChannel implements HttpParser.Reque
         // If we have no request yet, just close
         if (_metadata.getMethod() == null)
             _httpConnection.close();
-        else
-            onEarlyEOF();
+        else if (onEarlyEOF())
+            handle();
     }
 
     @Override