By Chuck Mikolajczak NEW YORK (Reuters) -A gauge of global equities slipped on Wednesday and was poised for a third straight decline, while longer-dated U.S. Treasury yields fell after economic data kept intact expectations the Federal Reserve has leeway to cut rates next year. U.S. private payrolls rose by 103,000 jobs last month, the ADP National Employment Report showed on Wednesday, below the 130,000 estimate of economists polled by Reuters. Data for October was revised lower to show 106,000 jobs added instead of 113,000 as previously reported. Other data showed U.S. worker productivity gr…