Revert "For-in should not iterate over inherited properties."
Revert "For-in should not iterate over inherited properties."

This reverts commit 0d4262ff02c2f3e475f5a48a79f1894f56dd853e.
For-in should iterate over inherited properties.

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