GLOBAL MARKETS-Wall Street stocks pare gains as legislators support Syria action

* U.S. stocks pare gains; Microsoft slumps after Nokia deal * Treasury bond selling resumes * US manufacturing sector expands * U.S. dollar hits six-week high By Caroline Valetkevitch NEW YORK, Sept 3 (Reuters) - World equity markets were higher on Tuesday but pared gains after U.S. Congressional leaders voiced support for military intervention in Syria, while bond yields rose and the dollar gained on strong U.S. data. Wall Street stocks initially rallied on opening af