No gloves are required to celebrate Boxing Day on this side of the pond By Angela Hill, STAFF WRITER FOR ONCE in a blue Christmas, we here in the U.S. of A. get the chance to celebrate Boxing Day, a jolly-good, Old English holiday and nothing to do with fists or shadows or the great Cassius Clay. The traditional Dec. 26 custom long has been observed in Britain, Australia, New Zealand and Canada, so the Brits, Aussies, Kiwis and Canucks always get an extra day off after Christmas when it falls during the week, and even an extra-extra day off...