New iterator ObjArrayStackIterNC<T>, and macro  FOREACH_OBJARRAYSTACK_NC(T, list, iter).
New iterator ObjArrayStackIterNC<T>, and macro  FOREACH_OBJARRAYSTACK_NC(T,
list, iter).

New method ObjArrayStack::append() as synonym for push(), for compatibility
with ObjList.


angavrilov/olmar,angavrilov/olmar,angavrilov/olmar,angavrilov/olmar