CHAPEL HILL — It’s here. Basketball season is here. Finally. It never really goes away in Chapel Hill, but it returns tonight when North Carolina begins the season at the Smith Center against Gardner-Webb. Around this time a year ago, the Tar Heels began the 2011-12 season with national championship aspirations. Entering this season, though, who knows what to expect? I wrote some about that in a story we ran earlier in the week, which you can read right here.