Bringing a team of uniquely talented people together to write a musical is always a challenge, but sometimes it becomes a truly harrowing ordeal. So it was when Ray Stark tried to recruit a creative team to write a musical about his mother-in-law, Fanny Brice, the legendary Vaudeville star who introduced songs like “My Man” and “Second-Hand Rose.” No musical has ever seen such a dizzying revolving door of talent. The opening was postponed five times! But when FUNNY GIRL…