QMetaObject::connectSlotsByName: Should be able to two arguments.

http://doc.trolltech.com/4.4/qmetaobject.html#connectSlotsByName

QMetaObject::connectSlotsByName can only take one object for the slots and the signals come from its children.

It would be much more flexible if it could take two arguments, one for the slots and one for which children the signals will come from. This will allow connecting two children of the same class.