In the photos, actors playing a trio of small time Chicago criminals (Troy Kotsur, Paul Raci, Matthew Ryan Pest) stammer, stutter, sputter, and spew the kind of rat-a-tat-tat verbal-jousting that characterizes the dialogue of David Mamet. It’s on offer in a new staging, just opened, of the playwright’s groundbreaking two-act play from 1975, “American Buffalo.” ...