Twelfth Judicial Circuit Judge John C. Anderson once bought a beer for Antonin G. Scalia.They were out to lunch in a group at the Washington Duke Inn and Golf Club in Durham, N.C., almost four years ago, in the midst of a legal masters program for sitting judges at Duke University.Anderson was one of two state court judges admitted. Scalia, of course, was one of the teachers, along with others like Supreme Court Justice …