LONDON (Reuters) – British labels Burberry and McQ by Alexander McQueen turned up the glamour at London Fashion Week with a pair of catwalk masterclasses late Monday that silenced talk of the city as merely the "capital of quirk." Although, a cradle of talent which has produced such stars as Stella McCartney, McQueen, Vivienne Westwood and Paul Smith, London's place on the fashion map has always …