Fix undeclared variable in startup.  Allow apply to accept array-like argument.
Fix undeclared variable in startup.  Allow apply to accept array-like argument.

NeilFraser/JS-Interpreter,NeilFraser/JS-Interpreter,arcatdmz/JS-Interpreter,arcatdmz/JS-Interpreter,NeilFraser/JS-Interpreter,arcatdmz/JS-Interpreter