explain when rtapi_app_exit is not called
explain when rtapi_app_exit is not called

cdsteinkuehler/linuxcnc,ianmcmahon/linuxcnc-mirror,yishinli/emc2,mhaberler/machinekit,bmwiedemann/linuxcnc-mirror,ArcEye/machinekit-testing,araisrobo/machinekit,bmwiedemann/linuxcnc-mirror,narogon/linuxcnc,narogon/linuxcnc,araisrobo/machinekit,ArcEye/machinekit-testing,EqAfrica/machinekit,bobvanderlinden/machinekit,bobvanderlinden/machinekit,jaguarcat79/ILC-with-LinuxCNC,bobvanderlinden/machinekit,araisrobo/machinekit,mhaberler/machinekit,ArcEye/MK-Qt5,cnc-club/linuxcnc,cnc-club/linuxcnc,unseenlaser/machinekit,unseenlaser/linuxcnc,ArcEye/MK-Qt5,yishinli/emc2,araisrobo/machinekit,Cid427/machinekit,jaguarcat79/ILC-with-LinuxCNC,Cid427/machinekit,cnc-club/linuxcnc,bmwiedemann/linuxcnc-mirror,RunningLight/machinekit,EqAfrica/machinekit,cdsteinkuehler/linuxcnc,jaguarcat79/ILC-with-LinuxCNC,kinsamanka/machinekit,araisrobo/linuxcnc,EqAfrica/machinekit,cnc-club/linuxcnc,ianmcmahon/linuxcnc-mirror,araisrobo/machinekit,unseenlaser/machinekit,cdsteinkuehler/linuxcnc,bobvanderlinden/machinekit,aschiffler/linuxcnc,bmwiedemann/linuxcnc-mirror,araisrobo/machinekit,strahlex/machinekit,aschiffler/linuxcnc,cdsteinkuehler/MachineKit,yishinli/emc2,cdsteinkuehler/MachineKit,cdsteinkuehler/linuxcnc,bmwiedemann/linuxcnc-mirror,RunningLight/machinekit,aschiffler/linuxcnc,kinsamanka/machinekit,unseenlaser/machinekit,EqAfrica/machinekit,Cid427/machinekit,araisrobo/linuxcnc,RunningLight/machinekit,ArcEye/MK-Qt5,ianmcmahon/linuxcnc-mirror,kinsamanka/machinekit,Cid427/machinekit,EqAfrica/machinekit,cdsteinkuehler/linuxcnc,bmwiedemann/linuxcnc-mirror,cdsteinkuehler/MachineKit,ArcEye/machinekit-testing,araisrobo/linuxcnc,bobvanderlinden/machinekit,ArcEye/MK-Qt5,mhaberler/machinekit,bobvanderlinden/machinekit,ianmcmahon/linuxcnc-mirror,mhaberler/machinekit,ArcEye/machinekit-testing,kinsamanka/machinekit,unseenlaser/linuxcnc,ArcEye/MK-Qt5,ikcalB/linuxcnc-mirror,unseenlaser/machinekit,Cid427/machinekit,araisrobo/linuxcnc,RunningLight/machinekit,araisrobo/machinekit,mhaberler/machinekit,unseenlaser/machinekit,aschiffler/linuxcnc,kinsamanka/machinekit,ikcalB/linuxcnc-mirror,bobvanderlinden/machinekit,Cid427/machinekit,RunningLight/machinekit,ikcalB/linuxcnc-mirror,strahlex/machinekit,RunningLight/machinekit,cnc-club/linuxcnc,unseenlaser/linuxcnc,ArcEye/machinekit-testing,ArcEye/MK-Qt5,strahlex/machinekit,strahlex/machinekit,unseenlaser/linuxcnc,unseenlaser/machinekit,Cid427/machinekit,strahlex/machinekit,mhaberler/machinekit,strahlex/machinekit,aschiffler/linuxcnc,ArcEye/MK-Qt5,jaguarcat79/ILC-with-LinuxCNC,cnc-club/linuxcnc,ikcalB/linuxcnc-mirror,ianmcmahon/linuxcnc-mirror,mhaberler/machinekit,ikcalB/linuxcnc-mirror,EqAfrica/machinekit,cdsteinkuehler/MachineKit,narogon/linuxcnc,ikcalB/linuxcnc-mirror,unseenlaser/linuxcnc,cdsteinkuehler/MachineKit,cnc-club/linuxcnc,EqAfrica/machinekit,cdsteinkuehler/linuxcnc,ikcalB/linuxcnc-mirror,ianmcmahon/linuxcnc-mirror,araisrobo/machinekit,ArcEye/MK-Qt5,ianmcmahon/linuxcnc-mirror,unseenlaser/machinekit,kinsamanka/machinekit,RunningLight/machinekit,unseenlaser/machinekit,kinsamanka/machinekit,bmwiedemann/linuxcnc-mirror,ArcEye/machinekit-testing,Cid427/machinekit,narogon/linuxcnc,ArcEye/machinekit-testing,ArcEye/machinekit-testing,jaguarcat79/ILC-with-LinuxCNC,mhaberler/machinekit,cdsteinkuehler/MachineKit,RunningLight/machinekit,EqAfrica/machinekit,yishinli/emc2,strahlex/machinekit,kinsamanka/machinekit,araisrobo/machinekit,narogon/linuxcnc,bobvanderlinden/machinekit,araisrobo/linuxcnc