copy check for disabled or nested recomputes from old implementation of recompute()
copy check for disabled or nested recomputes from old implementation of recompute()

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