CBS is digging through its closet for old Hawaiian shirts as it prepares for a reboot of Magnum P.I., and we finally know who will play the famous detective in the new series.The network has already found success by remaking their classic TV shows like S.W.A.T., MacGyver, and Hawaii Five-O, and they're hoping one of the most popular shows of the '80s is ripe for a revival.Now, CBS has announced that actor Jay Hernandez will fill Tom Selleck's shoes as Thomas Magnum, the suave private eye from Oahu, Hawaii.But there are some modern