PORTO VECCHIO, Corsica — Lance Armstrong made himself the uninvited guest at the Tour de France on Friday, coming back to haunt the 100th edition of the race and infuriating riders both past and present by talking at length in a newspaper interview about doping in the sport. Armstrong told Le Monde that he still considers himself the record-holder for Tour victories, even though all seven of his titles from 1999-2005 were stripped from him last year for doping. He said his life has been ruined by the U.S. Anti-Doping Agency investigation that exposed as lies his years of denials that he and his teammates doped.