classicladder: don't doubly-define variables
classicladder: don't doubly-define variables

I'm not sure how this was not a linker error, as these variables were also
defined in config_gtk.c

bobvanderlinden/machinekit,bmwiedemann/linuxcnc-mirror,EqAfrica/machinekit,ArcEye/MK-Qt5,Cid427/machinekit,unseenlaser/machinekit,aschiffler/linuxcnc,RunningLight/machinekit,bmwiedemann/linuxcnc-mirror,ArcEye/MK-Qt5,EqAfrica/machinekit,cdsteinkuehler/linuxcnc,unseenlaser/machinekit,bmwiedemann/linuxcnc-mirror,unseenlaser/linuxcnc,ArcEye/machinekit-testing,unseenlaser/machinekit,aschiffler/linuxcnc,cdsteinkuehler/MachineKit,ikcalB/linuxcnc-mirror,kinsamanka/machinekit,RunningLight/machinekit,araisrobo/machinekit,Cid427/machinekit,bobvanderlinden/machinekit,bmwiedemann/linuxcnc-mirror,ianmcmahon/linuxcnc-mirror,Cid427/machinekit,RunningLight/machinekit,ArcEye/MK-Qt5,araisrobo/machinekit,EqAfrica/machinekit,RunningLight/machinekit,mhaberler/machinekit,araisrobo/machinekit,ianmcmahon/linuxcnc-mirror,mhaberler/machinekit,araisrobo/machinekit,bmwiedemann/linuxcnc-mirror,kinsamanka/machinekit,strahlex/machinekit,Cid427/machinekit,mhaberler/machinekit,bobvanderlinden/machinekit,ArcEye/machinekit-testing,cdsteinkuehler/MachineKit,unseenlaser/linuxcnc,RunningLight/machinekit,cdsteinkuehler/linuxcnc,EqAfrica/machinekit,cdsteinkuehler/linuxcnc,araisrobo/machinekit,araisrobo/machinekit,kinsamanka/machinekit,ikcalB/linuxcnc-mirror,aschiffler/linuxcnc,bmwiedemann/linuxcnc-mirror,strahlex/machinekit,ArcEye/MK-Qt5,mhaberler/machinekit,strahlex/machinekit,strahlex/machinekit,Cid427/machinekit,EqAfrica/machinekit,unseenlaser/machinekit,strahlex/machinekit,ArcEye/machinekit-testing,ianmcmahon/linuxcnc-mirror,cdsteinkuehler/linuxcnc,cdsteinkuehler/linuxcnc,cdsteinkuehler/MachineKit,araisrobo/machinekit,unseenlaser/machinekit,ikcalB/linuxcnc-mirror,mhaberler/machinekit,RunningLight/machinekit,bobvanderlinden/machinekit,bobvanderlinden/machinekit,aschiffler/linuxcnc,ianmcmahon/linuxcnc-mirror,RunningLight/machinekit,cdsteinkuehler/MachineKit,bobvanderlinden/machinekit,mhaberler/machinekit,ArcEye/MK-Qt5,ArcEye/machinekit-testing,Cid427/machinekit,ianmcmahon/linuxcnc-mirror,cdsteinkuehler/MachineKit,strahlex/machinekit,unseenlaser/linuxcnc,ArcEye/machinekit-testing,ianmcmahon/linuxcnc-mirror,narogon/linuxcnc,EqAfrica/machinekit,ArcEye/machinekit-testing,ikcalB/linuxcnc-mirror,aschiffler/linuxcnc,ikcalB/linuxcnc-mirror,cdsteinkuehler/linuxcnc,bobvanderlinden/machinekit,unseenlaser/machinekit,Cid427/machinekit,Cid427/machinekit,bobvanderlinden/machinekit,araisrobo/machinekit,narogon/linuxcnc,bmwiedemann/linuxcnc-mirror,ikcalB/linuxcnc-mirror,narogon/linuxcnc,ikcalB/linuxcnc-mirror,RunningLight/machinekit,cdsteinkuehler/MachineKit,EqAfrica/machinekit,narogon/linuxcnc,mhaberler/machinekit,narogon/linuxcnc,ianmcmahon/linuxcnc-mirror,unseenlaser/machinekit,ArcEye/machinekit-testing,unseenlaser/linuxcnc,araisrobo/machinekit,ArcEye/machinekit-testing,kinsamanka/machinekit,EqAfrica/machinekit,kinsamanka/machinekit,ArcEye/MK-Qt5,strahlex/machinekit,kinsamanka/machinekit,ArcEye/MK-Qt5,unseenlaser/machinekit,kinsamanka/machinekit,kinsamanka/machinekit,ArcEye/MK-Qt5,mhaberler/machinekit,unseenlaser/linuxcnc