Apparently, it’s not enough that he helped foist “Smash” on the world. Now, Steven Spielberg tells The Wall Street Journal that he’s going to bring a “Cleopatra” musical to the live stage. I don’t think this is the material that Hugh Jackman and Catherine Zeta-Jones were going to do as a movie a few years ago. No word on who Spielberg is planning to cast: why not turn “Smash,” which returns tonight, into a bake-off for the leading roles? Would be more interesting than the “Marilyn ” musical storyline, whose tits are starting to sag.