may result in multiple executions of system epilog for a single job
   (gnats:267)

of socket communications. Previously was sometimes overwriting legitimate
SLURM error code with fcntl error code of EINTR.

sort of slurm error.

on a job kill. Let the KILL_JOB RPC do all of the cleanup. This removes
a redundant RPC. - Moe

occur naturally if a srun, scontrol, scancel, sinfo, or squeue command is
killed by the user with a communication to slurmctld in progress. This
seems to occur fairly regularly as part of batch job termination.

send/receive, function (poll, timeout, send, recv, etc), and the error message
are all reported.

resources to satisfy the request).

This prevents an orphan job if srun dies after sending the request
or the network fails or the authenticaion mechanism fails.

logging the event and returning SLURM_SUCCESS.

It was picking zero nodes and failing.

   problem when debugging remote tasks. (and error should have only
   printed once anyway)

   not SIGXCPU on reaching timelimit.

It was formerly just killing the job step processes.

to match that of a job's run time (TIME).

hand if race condition starting all daemons).

 o Export SLURM_NODELIST environment var in all cases

 o Changed correspondingly calls to above
 o Removed unnecessary envc member of job structure, along with references
   to said member

    is through with them.
 o added new function unsetenvp() to support above

the old_job_allocation response so as to conform with job step's specification.
For example, remove nodes that are excluded (-x), set the node count to
that requested (-N, eliminate nodes as required), etc. This requires
modifying the node list including the slurm_addr, and cpu_count arrays.