SYDNEY, Dec 4 (Reuters) - Australian shares look set for a rough ride on Friday after policy easing by the European Central Bank disappointed investors' high expectations, while a hike in U.S. interest rates seemed ever more likely this month. Stock markets across Europe and in the United States all fell sharply on Thursday. Oil prices managed a rare bounce but most other commodities stayed under pressure. Pointing to a poor start, share price index futures slid 1.5 percent to 5,155.0,
