Reuters, Colombo :Sri Lankan President Mahinda Rajapaksa lost his bid for a third term on Friday, ending a decade of rule that critics say had become increasingly authoritarian and marred by nepotism and corruption.Opposition candidate Maithripala Sirisena, a one-time ally of Rajapaksa whodefected in November and derailed what the president thought would be an easy win, took 51.3 percent of the votes polled in Thursday’s election.