(Adds details) CARMEL, Indiana, Sept 9 (Reuters) - World number one RoryMcIlroy continued his red-hot form when hecruised to his third win in four starts with a two-shot victoryat the BMW Championship on Sunday that locked in the elite30-man field for the Tour Championship. With a glittering leaderboard featuring six major winnersand four players who have held the number one ranking packedinto the top 10, McIlroy carded a five-under 67 at Crooked Stickto collect his fourth PGA Tour win of the season. The mop-topped Northern Irishman finished 20 under par andwill head to the Sept. ... More...