pegasus-analyzer does not track pre script failures

For a workflow, where the pre script fails, pegasus-analyzer reports the job as unsubmitted.

It does not list the job as failed with status as PRE_SCRIPT failure.


corbusier:run0003 vahi$ pegasus-analyzer .
pegasus-analyzer: initializing...

************************************Summary*************************************

 Total jobs : 5 (100.00%)
 # jobs succeeded : 3 (60.00%)
 # jobs failed : 0 (0.00%)
 # jobs unsubmitted : 2 (40.00%)