On the 10th anniversary of Rudolf Nureyev’s death, the Paris Opera Ballet mounts a glittering tribute. “The occasion was above all a homage. Thus, with all the pomp and reverence that the Paris Opera Ballet reserves for such occasions, it opened with a défilé, or parade, in which 250 dancers — the entire troupe as well as children from its ballet school — walked slowly toward the audience to the march from Berlioz’s opera “Les Troyens.” A huge photograph of Nureyev then appeared on a screen, followed by a film depicting his life.”