gscreen -add arbitrary line restart to emc_interface
gscreen -add arbitrary line restart to emc_interface

Allows restarting at any line when cycle started.
reset_line option allow remebering of that restart line or resetting to 0.
Gscreen doesn't currently use these routines as if uses HAL_ToggleAction_Run
in a similar way. This here so a user could use it in a custom screen.

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