Austin's Planning Commission approved a zoning change at its meeting last night clearing the way for the redevelopment of a roughly 21-acre industrial site currently occupied by the Borden Dairy plant, located at 71 Strandtman Cove near Highway 183 in East Austin -- set to become one of the largest mixed-use communities planned in the district. The proposal by Endeavor Real Estate Group would add 1,400 homes, 220 hotel rooms,