OpenSubdiv Blender demo

Just a quick update on what's happening in the opensubdiv-modifier branch in the Blender Git repository. This is an initial integration of GPU tessellation in Blender, it's totally not final and still loads of work to be done to make this project master-ready. But there are some really cool results. Link to the dragon file: http://download.blender.org/ftp/sergey/dragon_adult_flycycle.blend