All Our Names by Dinaw Mengestu Alfred A. Knopf, $25.95, 256 pages, ISBN 978-0-385-34998-7 This week’s MBR is a diversion from our usual focus on the mystery and crime fiction genres, to take a brief sojourn into literary fiction with a novel about a love affair and the intersection of two wholly different cultures during the 1970s—a time when the entire world was adjusting to a new reality. All