Add test for multiple simultaneous displays
Add test for multiple simultaneous displays

carbidegames/glium,glium/glium,sdotz/glium,rozaliev/glium,caldwell/glium,nicokoch/glium,TyOverby/glium,binsoftware/glium,christopheraugustus/glium,tomaka/glium,acolley/glium,bvssvni/glium,cpjreynolds/glium