(Reuters) - A 2012 PGA Tour season that began like a democracy with a diverse range of winners and several stunning 'come-from-behind' victories is poised to end as an autocracy with world number one Rory McIlroy reigning supreme. The mop-haired Northern Irishman will go into next week's Tour Championship in Atlanta, the final event of the regular season, in pursuit of his fifth title of the ...