LONDON - Celebrities mobbed a West End nightclub for a glitzy bachelor party to toast the upcoming civil union between Elton John and David Furnish. Ozzy and Sharon Osbourne, Elizabeth Hurley, Bryan Adams, Gary Barlow and Kid Rock were among those who streamed into the gala event Monday night in London's Soho neighborhood. John and Furnish slipped into the Too2Much venue just minutes before the show started. Shirtless waiters wearing black ties and riding boots served guests flutes of champagne. The nightclub, once a strip club known as Raymond's Revue Bar, features an auditorium with red leather and banquette seating,...