There’s a totemic quality to Farquhar’s ‘Pringle’ pieces, a sense that they are contemporary objects of faith. The spear-wielding sweaters in his earlier Community Hot Spots are a case in point. Half Lascaux cave painting, half a coded reference to the sleeve of Roxy Music’s Flesh and Blood (1980), they’re a shamanistic invocation of football casuals‚ up-for-it aggression and slick art school cool…