If you live in Barton Hills, Zilker, or any other neighborhood within a mile of the Brodie Oaks shopping center -- a 37-acre South Austin strip mall dating back to the 1980s that's set to be completely transformed into a $1 billion mixed-use project -- you might have heard that the developer, Barshop & Oles Company, is staging an unusual demonstration tomorrow. From 8:30 to 10:30 on Friday morning, there . . .