BOSTON - The Massachusetts high court ruled Tuesday that only full, equal marriage rights for gay couples — rather than civil unions — would meet the edict of its November decision, erasing any doubts that the nation's first same-sex marriages would take place in the state beginning in mid-May. AP Photo Slideshow: Same-Sex Marriage Issues The court issued the opinion in response to a request from the state Senate about whether Vermont-style civil unions, which conveyed the benefits — but not the title of marriage — would meet constitutional muster. The much-anticipated opinion sets the stage for next Wednesday's Constitutional...