By Saqib Iqbal Ahmed NEW YORK (Reuters) -The dollar clung to modest gains against the euro on Friday after data showed falling U.S. consumer spending and cooling inflation, and as investors awaited a slew of central bank meetings next week. Consumer spending, which accounts for more than two-thirds of U.S. economic activity, dropped 0.2% last month, the Commerce Department said on Friday. Data for November was revised lower to show spending slipping 0.1% instead of gaining 0.1% as previously reported. Economists polled by Reuters had forecast consumer spending dipping 0.1%. The Commerce Depart…