Put in extra space that was missing when slurm_ctime was made.
Fix bug in db_index and arrays.  When copying the job_ptr the wrong
job_ptr's db_index was reset.
Rename job_ptr_new to job_ptr_pend to avoid confusion.  Since the new
job_ptr is really the already existing job_ptr minus the task that was
just scheduled.
Set the correct db_index so we don't have to go get it again.