Dispatcher daemon
 - allows modules to register with it
 - when a job is scheduled, calls the job and forks
   -- job tries to obtain a lock
      -- if it fails, count++
         if count > max --> warn
      -- if lock obtained
         -- run job to completion
         -- appends messages to a log shared by all jobs
         -- unlock
         -- exit
   -- if receives a SIGINT
      -- stops all forked children
      -- exits