By Nell Mackenzie LONDON (Reuters) – Veteran hedge fund manager John Taylor describes one of his favourite Gary Larson cartoons, where one vulture sitting on an animal carcass says to another as more descend: “good friends flying in from all over…this is the best of times”. There is, he says jokingly, a resemblance to the hedge funds currently circling foreign exchange markets, where a sudden rise in volatility offers to boost returns for the few specialist investors who survived the decade-long period of calm that forced many from the sector. Taylor’s former firm, FX Concepts, rode the fina…