Comment 1 for bug 750113

I think I'm going to do something slightly different here; the only reason to ever disable respawn is in the shutdown procedure, right now that consists of:

 * shutdown/telinit sends an event
 * user/system upstart jobs process that event
 * user/system upstart job finally calls poweroff, halt or reboot

We should turn that on its head to:

 * shutdown/telinit sends shutdown command to init
 * init sends an event
 * user/system upstart jobs process that event
 * init kills all remaining jobs
 * init sends a second event
 * user/system upstart jobs process that event
 * init calls the reboot() syscall itself

This will be ultimately much more in pattern with the Upstart way; and that shutdown command would be what disables respawning.

Does this make sense?