OSLO, Norway (AP) - Humanitarian groups criticized McDonald's for a new sandwich called the McAfrika, saying the offering is poorly timed because millions of Africans are facing starvation. But aid officials on Monday welcomed an agreement by the fast-food restaurant chain to inform customers about the potential famine in southern Africa and tell them how they can help, Tarje Wanvik of the Norwegian Church Aid group said Monday. McDonald's was stung by bad publicity in the Norwegian media last week when it announced the new sandwich, made of beef and vegetables and wrapped in pita bread, at its restaurants in...