Bob Moyer says this accomplished new novel by Bernhard Schlink tells us a lot about modern-day Germany and the new-Nazi movement. Reviewed by Robert P. Moyer THE GRANDDAUGHTER. By Bernhard Schlink. HarperVia. 336 pages. $28.99 Bernhard Schlink gave us one of the most accomplished novels of the 20th century, capturing the zeitgeist of post-war Germany.…