SAN FRANCISCO — Of course Giants players are eager to learn all they can about their new head coach. As such, Kayvon Thibodeaux, as he made the rounds during Super Bowl week, asked around about John Harbaugh.  Thibodeaux found “a few older guys” who played for Harbaugh and the reports he got back all confirmed that he is an “old-school” coach and “he’s strict but he knows football and he loves football.’’  Access the Giants like never before Get texts from Paul Schwartz with all the latest