Ever have a dream so vivid that you’d swear it was real? Ever seen your dream spring to life from your frontal lobe and collide with another person’s dream? Most folks wistfully sigh about following their dreams with an inert yearning, as if they’re hoping somebody else will do it on their behalf; the characters in Emir Kusturica’s “Arizona Dream” literalize the search, chasing after their dreams starting in their sleep and continuing on to their waking hours.