OUAGADOUGOU, Burkina Faso — A Burkina Faso military tribunal has sentenced ex-President Blaise Compaore to life imprisonment for complicity in the murder of his predecessor Thomas Sankara in 1987 and for undermining state security. “It is not good that people kill other people and stop the process of development of a country without being punished.” The long-awaited trial, nearly 35 …