Added sanity checks on reported controllers to prune out one with no Axis or no Buttons.

src/java/org/lwjgl/input/Controllers.java

@@ -71,6 +71,19 @@ public class Controllers {
 		net.java.games.input.Controller[] sub = c.getControllers();
 		if (sub.length == 0) {
 			JInputController controller = new JInputController(controllerCount,c);
+			
+			// sanity checks to ensure we're actually getting game controllers rather than
+			// any old detected device
+			
+			// if we've got no buttons at all we're not a game controller
+			if (controller.getButtonCount() == 0) {
+				return;
+			}
+			// if we've got no axis at all we're not a game controller
+			if (controller.getAxisCount() == 0) {
+				return;
+			}
+			
 			controllers.add(controller);
 			controllerCount++;
 		} else {