Returning to Cannes, Pedro Almodóvar steels himself to weather the inevitable acclaim, Glenn Whipp writes. Pedro Almodovar didn’t know the finer points of film festival standing ovations when he first showed a movie in competition at Cannes in 1999. As the credits began to roll for his acclaimed melodrama All About My Mother the audience inside the Grand Theatre Lumiere rose and applauded. The acclamation continued to build, and the Spanish auteur was overcome with gratitude — for a few moments. But after about five minutes of cheering and clapping, Almodóvar didn’t know what to do. He’s not a film-maker given to false modesty, but how long can you bask in that kind of adoration? You can only smile and wave and clasp your hands for so long. Finally, he motioned the audience to stop, like, "OK. OK. Enough. Let’s go have dinner and a drink." "Big mistake," Almodóvar tells me, laughing. "[Actor] Marisa Paredes leaned over and told me, ‘Never stop an ovation!’.…