Jacko is shocko at his associate's gay porno BY MICHELLE CARUSO DAILY NEWS WEST COAST BUREAU CHIEF SANTA MONICA, Calif. - A wide-eyed Michael Jackson testified he "was shocked" when he saw a video of his ex-associate actively directing a gay porn film, according to videotaped deposition shown in court yesterday. The no-show singer's ghostly image was projected on a 4-foot-by-4-foot screen in the trial of a $1.5 million breach-ofcontact suit filed by his former video producer Marc Schaffel in Santa Monica Superior Court. In the sworn testimony, which was taped in London's Dorchester Hotel on Sept. 23, 2005, and...