SAN FRANCISCO -- The hundreds of gay and lesbian weddings performed in San Francisco since Thursday will stand at least through the week-end after a Superior Court judge denied a motion to halt and nullify the same-sex marriages. Following the ruling, which delayed further legal action until at least Tuesday, Mayor Gavin Newsom opened the floodgates, extending city clerk hours until 6 p.m. Friday evening -- with ceremonies likely conducted until midnight. And as if adding an exclamation point, he also announced weekend hours for today, Sunday and the Monday holiday from 10 a.m. to 4 p.m., no appointment necessary....