Scripts; Object Events; New, simplified, ExecuteObjectEvents method

A new ExecuteObjectEvents method has been added to call "Object Events" type Scripts.

The interface to this method is used to simplify situations where the Script is being used by other Scripts as a means of executing a method (the eventId argument), receiving parameters (the parameters argument) and can retrieve multiple return values (the returnValues argument which actually co-opts the contextData1 argument to the Script).