By Philip Pullella VATICAN CITY (Reuters) – The Roman Catholic Church should “seriously think” about allowing priests to marry, a senior Vatican official and advisor to Pope Francis said in an interview published on Sunday. “This is probably the first time I’m saying it publicly and it will sound heretical to some people,” Archbishop Charles Scicluna of Malta, who is also adjunct secretary in the Vatican’s doctrinal office, told the Times of Malta. Pope Francis has ruled out any chance that he would change the Roman Catholic rule requiring priests to be celibate. But it is not a formal doctrin…