"This" is a borough revitalization effort nearly two decades in the making. As neighboring communities across the Philadelphia suburbs have transformed from old mill towns to lively destinations for eating, shopping, and imbibing, Bridgeport's progress has been slow and not quite steady. Barbee, 28, the borough's first gay mayor and its first African American mayor, has set out to turn the tide, with lofty goals of building up the waterfront and attracting more twentysomethings like himself to the area.