If you’ve ever had one of those family vacations that makes you yearn for the safe and orderly routine of everyday life, then you may identify with the beautiful but profoundly disoriented couple at the heart of Swedish filmmaker Ruben Östlund’s brilliant and disconcerting “Force Majeure.” As Ebba (Lisa Loven Kongsli), a willowy, 30ish wife and mother, tells her brother-in-law and his much younger girlfriend – who have no idea what they’re in for – here she is at a spectacular resort in the French Alps, where everything is supposed to be perfect, and things are not good at all.