Maybe you’ve got a 20-year old bottle of Burgundy chilling in your wine cellar that you want to drink for a special dinner out. Or, you just want to order something nice off the wine list. Up until now, D.C. ABC regulations dictated that you can’t carry any remainder out of the restaurant. So of course, most folks would either try to finish the whole thing, leave it behind, or stealthily hand it off to…