[base] TimeSpan: added .cpp file to TimeSpan (required for global static Zero)
[base] TimeSpan: added .cpp file to TimeSpan (required for global static Zero)

christianparpart/x0,christianparpart/x0,xzero/x0,xzero/x0,christianparpart/x0,christianparpart/x0,christianparpart/x0,xzero/x0,xzero/x0,xzero/x0,christianparpart/x0,christianparpart/x0,xzero/x0