GLOBAL MARKETS-Dollar strengthens on robust U.S. data; gold falls
* Oil prices gain, stay near four-month highs * Wall St flat, European equities slip * Sterling sinks to fresh 31-yr low * U.S. jobless claims fall; focus on Fri payroll report (Updates with U.S. afternoon trading) By Lewis Krauskopf NEW YORK, Oct 6 (Reuters) - The
