SAINT MARY'S COLLEGE, dedicated originally to the Mother of Christ, should now formalize in words what it's long demonstrated in shameful deeds: the place should no longer call itself "Catholic." Last year, with no apparent sense of irony, SMC paid defiantly unrepentant "Weather Underground" terrorist William Ayers to speak on "living our lives for peace and justice." A brainwashed 2003 SMC alumnus then applauded the Ayers appearance in a Times guest column, claiming "the role of violence in the pursuit of political goals, the integration of radical agents into mainstream political operations, what constitutes a 'terrorist' "... " were merely...