Bug 1047614 - Give ReadbackManagerD3D11 a private destructor; r=jrmuizel
Bug 1048240 - Fix more bad implicit constructors in accessible; r=tbsaunde
Bug 1048245 - Fix more bad implicit constructors in image; r=jrmuizel
Bug 1048243 - Fix more bad implicit constructors in gfx; r=jrmuizel