The Bahdziewicz clan trooped into the Mule Barn for lunch the other day, happily and noisily as only eight Americans totally in love with summer can do. The patriarch of the clan, Abraham Lincoln Bahdziewicz, led the way to a large round table and seated his wife, Sally, before pointing to which chairs the kids should use. Some people can make a celebration out of sitting down to eat, and Abe’s gang knows how to do it.