GLOBAL MARKETS-Wall St gains, dollar rises as central bank moves eyed

(Recasts with Wall Street reversing early losses, adds late prices)* Wall Street rallies for second straight session* China data, QE prospects lift European shares* China slows less than expected, IMF cuts global outlook* Dollar rises vs yen, gold gainsBy Michael ConnorNEW YORK, Jan 20 (Reuters) - Equities rose worldwide on Tuesday, with Wall Street reversing early losses and the dollar climbing 1