GLOBAL MARKETS-Wall St, dollar up on possible central bank moves

* Wall Street rises for second straight session* China data, QE prospects lift European shares* China slows less than expected, IMF cuts global outlook* Gold gainsBy Michael ConnorNEW YORK, Jan 20 (Reuters) - Equities rose worldwide on Tuesday, with Wall Street reversing early losses and the dollar rising 1 percent against the Japanese yen, as diminishing global growth prospects bolstered hopes fo