LOS ANGELES — For the Lakers, seems like old times … Well, if you squint your eyes just right. As if still in their days of yore, the Lakers opened their 2013-14 season with an exciting 116-103 victory over a top-flight opponent Tuesday before a jubilant sellout crowd in Staples Center. Think of it, the Lakers among the ranks of the unbeatens! Aside from that, it wasn’t anything like their days of yore. The top-flight opponent, coming off last season’s 4-0 sweep of the season