Made Selector derive from Function, fixed numerability of Instance.{constructor,proto...

Made Selector derive from Function, fixed numerability of Instance.{constructor,prototype,value}, renamed data to internal across-the-board, swapped orderring of ivar iteration to put superclasses first, made Prototype's prototype be the superclasses Prototype, implemented labelled statement serialization, and hammered away at a stupid corner case involving blocks and statment serialization.