The old Kreuz Market was like a one-room chapel. The humble brick building off the courthouse square in Lockhart had turned out divine smoked meat since 1900. But just as churchgoers nowadays worship in larger halls, so too does the visitor to the new Kreuz Market, which opened in 1999 in a gigantic building at the edge of town. (The old building now houses Smitty’s.) Kreuz (pronounced “Krites”) does 45 percent of its business on Saturday….