If the “gossip in publishing circles” has any merit, novelist Rachel Cusk has turned her eye to Natalie Portman for her latest book, said Leaf Arbuthnot in The Telegraph. The actor isn’t named in “Life of M”. But the similarities between the character “M” and Portman are “so glaring they become hard to ignore” – and the portrayal is far from complimentary. An unflattering portrait“Life of M”, which is published next month, is about a film star w…