add a compile time option to report an islanded circle as a specctra_export error

                break;

                break;

            case S_CIRCLE:

            case S_CIRCLE:

#if 0

                // do not output a circle, freerouter does not understand it.

                // do not output a circle, freerouter does not understand it.

                // this might be a mounting hole or something, ignore it without error

                // this might be a mounting hole or something, ignore it without error

                // because some of our demo boards have used the edges pcb layer to

                // hold islanded circles, rather than simply using holes.

                break;

                break;

#else

                // Do not output a circle, freerouter does not understand it.

                // tell user his board has a problem, this is better than silently

                // ignoring the error. "edges pcb" layer should not be used

                // to hold islanded circles which could or should better be done

                // as simple holes. (Some of our demo boards have this problem.)

                // fall thru here to report the error.

#endif

            default:

            default:

                {

                {

                    wxString error;

                    wxString error;

                    error.Printf( _("Unsupported DRAWSEGMENT type %s"),

                    error.Printf( _("Unsupported DRAWSEGMENT type %s"),

                      BOARD_ITEM::ShowShape( (Track_Shapes) graphic->m_Shape ).GetData() );

                        GetChars( BOARD_ITEM::ShowShape( (Track_Shapes) graphic->m_Shape ) ) );

                    ThrowIOError( error );

                    ThrowIOError( error );

                }

                }