Add node state flag of JOB_RESIZING. This will only exist when a job's

    accounting record is being written immediately before or after it changes
    size. This permits job accounting records to be written for a job at each
    size.
Make calls to jobcomp and accounting_storage plugins before and after a job
    changes size (with the job state being JOB_RESIZING).All plugins write a
    record for the job at each size with intermediate job states being
    JOB_RESIZING. More work is needed for correct accounting.
svn merge -r19782:19944 https://eris.llnl.gov/svn/s lurm/branches/slurm-2.2.resize