Two distinguished British writers – Sebastian Faulks and Geoff Dyer – have recently published vivid boomer tales of a world shaped by food shortages and the Second World War. But, will anyone want it – or buy it – from the never-had-it-so-good generation, writes Robert McCrum O nce upon a time, in the cold grey years after the Second World War, Britain was a land of hope (if not glory), symbolised by a Labour landslide and the newly created welfare state. Simultaneously, the baby-boom