fixes #0001672: Raytracing export to POV-Ray - respect ASCII convention for I/O filenames
fixes #0001672: Raytracing export to POV-Ray - respect ASCII convention for I/O filenames

Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master