Customers wait in line at Louie Mueller Barbecue in Taylor. (Photo ©Chris Wilkins/Texas BBQ Posse) I don't know if Ross Perot likes barbecue. He's Texan, so probably. But it doesn't really matter. He had the perfect term for what's happening now in some parts of the Texas barbecue world. Gorilla dust. Whenever Ross saw sideshows obscure real issues, whenever he saw posturing and anemic attempts at intimidation, he called it "gorilla dust." For him, cutting through b.s. was the only way to do business. That approach helped make him a business legend. During the past week or so, as I've…