Rudolph W. Giuliani's first inauguration as mayor here was a family affair. His 7-year-old son, Andrew, mugged for the cameras as Papa Rudy toasted his television hostess wife, Donna, as "my partner, my inspiration and my lover." Then daughter Caroline, 4, hid behind her hat as the couple kissed that Jan. 2, 1994. Thirteen years later, that familial unit is nowhere to be seen in the Giuliani presidential campaign. The once rambunctious Andrew, now a burly Duke sophomore, has indicated that he has no plans to stump for his father — he's too busy working on his golf game. Neither...