8048079: Persistent code store is broken after optimistic types merge
Reviewed-by: sundar, jlaskey, attila
check with loadWithNewGlobal
obj.x 344
obj.y 12
obj instanceof global.Point? true
p.x 343
p.y 54
p instanceof P? true
check with script engine
obj.x 344
obj.y 12
obj instanceof global.Point? true
p.x 343
p.y 54
p instanceof P? true