There are two problems with AbstractButton's multiClickThreshold.

1) I believe it should set the threshold between successive actionEvent firing. It kind of does this right now, but the counter is reset on every mouse click. As such, when the property is set, multiple repeated clicking will not fire more than one actionevent when the property is set. I think the counter should be set only when an even is fired.

2) This property is not used when doClick() is called or when the space bar is used. It should be.