At this point in time:  There is no indication that anything else might be done, by local and area government and civic leaders, to help move the Owens-Illinois Company to change its earlier announcd plans to close its Clarion glass producion plant, this summer.     At Tuesday's Clarion County Commissioners work session, Chairman Dave Cyphert reviewed, for reporters, the fact that nothing has happened to reverse the situation involving O-I's earlier statements indicating  that the firm has too much production capacity.     And, Commissioner Tim Reddinger wished that some unspecified actions could have been taken, 20 years ago, which might have averted the current situation.