A transformative adaptive-reuse project in Charlotte's North End will include a huge flux of office, retail and housing in several former industrial buildings. ATCO Properties, based in New York, closed on its purchase of 75 acres, including six warehouses, late last year. The firm submitted a rezoning petition on Friday to allow a mixture of uses on the site, including up to 1.5 million square feet of office space; 1,500 apartments; 200,000 square feet of retail; 80,000 square feet of eating, drinking…