HONOLULU, Hawaii (AFP) – Barack Obama Friday grabbed a few precious hours with his gravely ill grandmother in Hawaii, after saying the woman he calls a "rock" of his life may not live until the election in 11 days. The Democratic presidential nominee headed back to the apartment block where his grandmother Madelyn Dunham, 85, who raised him for much of his childhood, lives, for a second visit after arriving in his native state late Thursday. At one stage, a somber looking Obama emerged from the building for a solitary walk around his boyhood haunts, trailed by a lone Secret...