At any given moment on any given day over the last 3 1/2 years, Andrew Adamson could have been fretting over fauns, goblins, unicorns, satyrs, ogres, sprites, centaurs and dryads. The director of “The Chronicles of Narnia: The Lion, the Witch and the Wardrobe” might be found worrying about four actors so young the littlest member still sucks her thumb. Adamson may well have been occupied by a crew of up to 800 people, a budget of $180 million, and some 1,700 special effects shots. Or perhaps he was negotiating a story point with the C.S. Lewis estate, which was determined not to let Hollywood disfigure the author’s most famous book. […]