MEXICO CITY, Nov. 29 — In a setback for journalistic freedom in Mexico, the Supreme Court ruled Thursday that the governor of Puebla did not violate the rights of a journalist when he had her jailed on defamation charges. The judges ruled 6 to 4 against the journalist, Lydia Cacho, despite an investigation by one of them that concluded that at least 30 public officials, among them Gov. Mario Marín...