BRUSSELS (Reuters) - Confidence in the euro zone's economy improved more than anticipated in May, data showed on Thursday, offering a glimmer of hope for a recovery later this year. Economic morale in the 17 countries using the euro increased by 0.8 point to 89.4, the European Commission said. Economists polled by Reuters had expected an increase to 89.0. Confidence improved in all five of the euro zone's largest economies - Germany, France, Italy, Spain and the Netherlands. The upturn was notable across all sectors except for construction. ...