use of errno to pass around information

Expand explanation of recent change in NEWS.

    the queue SLURM searched in an attempt to backfill jobs, default value 
    is 50 jobs.

CompleteWait configured to 0 (default). Change to wait.

from END to END_TIME

  as a return code from the terminate job RPC

  after that, kill the job

Correction in computing a job's TotalProcs value when ThreadsPerCore>1 and
    allocating by cores or sockets.

    allocating by cores or sockets.

 (was advancing "len" in two places)

 -- Move processing of node configuration information in slurm.conf and
    topology information in topology.conf from slurmctld into common and load 
    that information into slurmd. Use it to set environment variables for jobs
    SLURM_TOPOLOGY_ADDR and SLURM_TOPOLOGY_ADDR_PATTERN describing the network 
    topology for each task. Based upon patch from Mattheu Hautreux (CEA).

If a slurmd does not have a node listed in it's slurm.conf (slurm.conf's should be kept the same on all nodes) an error message is printed in the slurmctld log along with the message already being printed in the slurmd log for easier debugging.