By Michael Starr. Originally posed by the New York Post. Once upon a time we had “The Birdman of Alcatraz.” Now we have “The Pigman of Texas.” Discovery is ready to launch a new reality show, “Boss Hog,” premiering Friday, April 11 (at 10 p.m.). It’s centered around Brian “Pigman” Quaca, a Texas-based wild-hog wrangler who’s built an empire on helping to manage the state’s …