It might be a stretch dubbing fuzzy-faced Seth Rogen and the ultra-glamorous Charlize Theron as the new Tracy and Hepburn, but sans the F-bombs and masturbation gags, that’s the vibe emanating from the highly enjoyable, overly long, “Long Shot.” Like the bulk of Kate and Spence’s oeuvre, “Long Shot” is a workplace comedy in which sparks fly as opposites attract.