ON ONE OF the Sunday morning interview shows, presidential adviser George Stephanopoulos referred several times to the person charged with firing a semiautomatic rifle at the White House as the "gentleman." That would seem an odd use of the word, but oddly enough, it isn't anymore. The term is regularly employed these days by police officers and law-enforcement spokesmen to describe suspected bank robbers, housebreakers, homicidal maniacs and carjackers they've nabbed, as well as whatever free-ranging felons they might be tracking at the moment. ("The gentleman was last seen wearing a ski mask...