Exclusive: The veteran auteur asked his "Gangs of New York" star Daniel Day-Lewis why he came out of retirement. To work with his son, rookie director Ronan Day-Lewis, the Oscar winner said. It’s not every day you get to watch Martin Scorsese interview a young filmmaker on his first film , from soup to nuts, along with his cast. In this case, after a celebrity-packed screening of New York Film Festival entry “Anemone” at the Whitby Hotel, Scorsese moderated a Q&A with Daniel Day-Lewis , who