BEIJING — Danny Boyle will be jury prexy at the Shanghai Film Festival.In Beijing for the bow of “Slumdog Millionaire,” approved for wide distribution in China beginning today, Boyle told the Xinhua news agency that he had never been on a fest jury before. Boyle also said he was considering making a pic in China. “When you have a city that is full of people and stories like Mumbai, Beijing or Shanghai, it’s just so much excitement and potential for a filmmaker. It’s like a dream come true,” he said. The Shanghai fest runs June 13-21. More than 600 features and 200 shorts have already been submitted to the fest committee.