From the runway strut to the hoochie koochie, choreographer Trajal Harrell is turning outlaw dance forms into radical, booty-shaking spectacleThe voguing balls of Harlem, the hoochie koochie dances of rural America, the elaborate, prancing gait of runway models " these aren't influences that routinely feature in contemporary dance. Yet for the American choreographer Trajal Harrell they've proved extraordinarily ferti…