Over the weekend:  The site of Clarion's former Bi Lo supermarket was still open to the public.     But, the place was only offering for sale what had been all of the store's fixtures and furnishings.     It was, in fact, on Friday evening when the Clarion Bi Lo supemarket quit operation as a supermarket.     The Clarion Bi Lo market was, of course, one of the stores which the Tops markets chain recently purchased from the bankrupt Penn Traffic Company.     Most, of all the stores which Tops bought from Penn Traffic, such as the former Bi Lo sites in Brookville and Dubois, have already been converted into Tops markets locations.     However, Clarion's Bi Lo location failed to pass a review by Tops officals.