GLOBAL MARKETS-Wall St comeback fades as emerging market fears linger

* IMF urges global central bank coordination * Euro slides after inflation data * Commodities lower on stronger dollar, growth fears * Chinese New Year holiday closures curb activity By Rodrigo Campos NEW YORK, Jan 31 (Reuters) - Bargain-hunters on Wall Street could not stop the bleeding in global shares on Friday as fears of a protracted capital flight out of emerging markets lingered, handing a gauge of global equities its worst month in almost two years. U.S. stocks