GLOBAL MARKETS-Stocks edge up worldwide, oil falls before OPEC talks

(Updates market prices, oil price drop, adds comment) * U.S. shares knocked around by mixed U.S. data * Oil falls after talks with non-OPEC producers yield no cuts * Dollar undermined by drop in U.S. consumer confidence * European stocks touch two-month highs By Daniel Bases NEW YORK, Nov 25 (Reuters) - Wall Street stocks pared gains on Tuesday after the lowest U.S. consumer confidence data since June took the wind out of a rally spurred by a surprising upward revision t