By Denny Dyroff, Entertainment Editor, The Times The Pennsylvania Hunt Cup There are several events in the area this weekend with impressive numbers regarding anniversaries – lofty numbers such as 87, 58, 52, 45, and 40. The Pennsylvania Hunt Cup (Pennsylvania Hunt Cup racecourse, Newark Road, Unionville, 484-888-6619, http://pahuntcup.org) is one of the oldest and most respected equestrian events...