[Pki-devel] [PATCH] 26 Refactored JobsScheduler.

The JobsScheduler has been modified to stop all jobs on shutdown. This is done by setting a flag in each job instead of stopping the job thread abruptly. Long running jobs should check this flag periodically and then exit gracefully. None of the existing jobs need to do this since they do not run very long. Other threads that run background services have been converted into daemons such that they will terminate automatically when the JVM exits. Ticket #73 -- Endi S. Dewata