kes Fix bug #1046 VolumeToCatalog incorrectly reports mounted

kes  Fix bug #1046 VolumeToCatalog incorrectly reports mounted
     filesystems as missing on the Volume.
kes  Rewrite the set_jcr_job_status() code to include job status
     priorities so that more important status changes occur but
     lower priority status changes will not overwrite something
     more serious.  This could possibly cause reporting incorrect status
     reporting in some cases.  More testing is needed to ensure
     I have the right priorities. This vastly simplifies the previous
     contorted logic.
     Verify Diff status should now be correctly reported, whereas it
     was previously lost.
kes  Reduce some debug output.