Canwest News Service: When Sean Fitzgibbons opened the Ontario franchise of Multivista Construction Documentation Inc. last year, he never imagined he was about to become an eco-warrior. Fitzgibbons’ team photographs the guts of buildings under construction, and Multivista software melds the photos with architectural CAD drawings. Rather than blindly punch through walls, they can simply point, click and digitally peel back drywall to inspect items like plumbing or electricity hidden within. The …