By Bill Marx Two new World Books reviews up at PRI’s The World. Alexander Nemser lauds “An Elegy for Easterly,” a collection of sharply-written stories by Petina Gappah that explores the hyperbolic disaster of Robert Mugabe’s presidency. “Here are the daily lives of the country’s mechanics, bankers, students, housewives, traveling salesmen, beggars, and madwomen, everyone…