re-launch a job step if the step fails with a reserved port conflict.

    as any task of a job step exits with a non-zero exit code. Patch based
    on work from Eric Lin, Bull.

    interval between executions of the backfill scheduler logic.

    show what ports are reserved for a job step.

add to slurmctld step structure a resv_port_cnt.

    management.

    error "cons_res:_rm_job_from_res: node_state mis-count"    

    a reservation of type MAINT.

    binding information to be logged.

    associated with nodes. Patch from Kumar Krishna.

    if not specified use MaxTime for the partition. Patch from Par
    Andersson, National Supercomputer Centre, Sweden.

    given list of nodes.

    indicated the count of job restarts made.

    eventual support of Cray-XT systems.