At today’s annual Oscar Nominees Luncheon, Academy of Motion Picture Arts and Sciences president Cheryl Boone Isaacs blissfully took care of a question that may have been on lots of minds in the room filled with contenders and voters. That would be the recent controversy over diversity in the Academy membership ranks and among this year’s nominees which, unless you have been living under a rock, includes the fact that again the Oscars have a lineup of all-white acting…