VER-SUR MER, France (AP) — Along with the generals and the paratroopers, the pilots and the infantrymen, spare a thought for the young Irish woman who may have played the most important role of all in making the D-Day landings a success. Maureen Sweeney was a postal clerk at Blacksod Point on the northwest coast of Ireland, where one of her duties was to record data that fed into weather forecasts for the British Isles. In early June 1944, Sweeney sent a series of readings that helped persuade Gen. Dwight D. Eisenhower, the supreme commander of Allied forces in Europe,...