higher priority job

  depending upon PreemptMode configuration

  which is the proper data type for this function

Add PreemptMode-checkpoint (needs more testing).

    that the select/cons_res plugin has allocated to a job.

  what the CPUs mask represents

nodes in "scontrol show job" into just one line.

rename _cr_priority_selection_enabled() to _job_preemption_enabled()
add _job_preemption_killing()
add limited support to avoid counting memory allocated to nodes by 
  jobs that are going to be killed or requeued as part of the process
  to start a high-priority job

  add cr_preemption_killing() in select/cons_res

will only be populated when (show_flags & SHOW_DETAIL)
Added a --detail option to "scontrol show job" to display the cpu/mem
allocation info on a node-by-node basis.

    daemon so that job preemption and gang scheduling can be used with the
    sched/backfill plugin. Added PreemptMode=off|suspend|kill configuration
    parameter to enable/disable the job preemption logic (disabled by default).
 -- If the --partition option is used with the sinfo or squeue command then
    print information about even hidden partitions.
svn  merge -r18053:18120 https://eris.llnl.gov/svn/slurm/branches/srun-2.1.preempt