KENNEBUNKPORT, Maine -- Two old men, neither particularly grumpy, have been in the news in recent weeks, and their re-emergence in the public eye is a sobering reminder of how different is our civic life than even a few years ago.At times in their lives, George H.W. Bush, 89, and Robert J. Dole, 90, were bitter rivals and fierce pugilists. Today the two men are beloved figures, Bush celebrated for shaving his hair in support of a Secret Serviceman whose 2-year-old is battling cancer, Dole feted in the capital this summer upon entering his 10th decade.Twice, in 1980 and in 1988, the two men fought each other for the Republican presidential nomination. These battles were brutal, and no one who witnessed them will ever forget the intensity of their rivalry and the depth of their enmity.