Vivid portrait of the great playwright of inertia points up the contrast with his real-life romantic entanglements and daring work for the French resistance Director James Marsh has boldly, maybe even sacrilegiously, given us a Hollywoodised biopic of Samuel Beckett. It starts with Beckett surreally escaping the Nobel ceremony to talk in private with a doppelganger confessor " a breezier, more worldly self in a rolln…