Reuters) - Libyan leader Muammar Gaddafi has likely been wounded in western airstrikes and has probably left Tripoli, Italian Foreign Minister Franco Frattini said Friday. A Libyan government spokesman immediately denied that Gaddafi had been harmed. Frattini told reporters that he believed what he had been told by Giovanni Innocenzo Martinelli, the Catholic bishop in Tripoli, that Gaddafi had probably left Tripoli and had probably even been wounded by NATO airstrikes. "I tend to give credence to the comment of the bishop of Tripoli, Monsignor Martinelli, who has been in close contact over recent weeks, when he told us that...