CANNES, France — I have an ear-to-ear smile plastered on my face as I just watched the trailer for "Coupez!" the next-day refresher after taking in the movie last night here in Cannes, where it opened the 75th edition of the festival. At the screening I laughed and I laughed and I laughed again. Because the film is brilliant and handled with maestria by Michel Hazanavicius (“The Artist”) and it's not afraid to be an honest-to-goodness comedy, one that shows the mishap potential