Implement an option NONE for not sending mails
at all.
Closes http://bugs.schedmd.com/show_bug.cgi?id=1962

Fix teardown race condition that can result in infinite loop.
bug 1947

This prevents a step from being launched if the job is killed
while the prolog is running. Reproducing the original failure
requires use of srun to trigger the prolog and using scancel
while that prolog is running.
bug 1755

anomaly when only asking for 1 (task_id was never set to INFINITE).

And add missing documenation.
Bug 1921

GRES were not being properly tracks for multiple simultaneous steps.
A step which could have run later could be rejected as never being
able to run.
Replacement for commit dd842d79, which was reverted in commit 6f73812875c
bug 1925

and you use all the GRES up instead of reporting the configuration isn't
available you hold the requesting step until the GRES is available.

Don't trucate task ID information in "squeue --array/-r" output.
Task ID info in sview also expanded to 64 characters (from ~16 chars).

Fix for bad cut and paste.  Looks like the original code was just a copy
of the access parsing.

    slurmctld.

Use more flexible mechnanism to find json installation.

Fix srun from inheriting the SLURM_CPU_BIND and SLURM_MEM_BIND environment variables when running in an existing srun (e.g. an srun within an salloc).

Bug 1888

Improve job state reason string when required nodes not available.
bug 1920

Remove our work around for a bug in the Cray API that has recently
  been fixed.
Improve error message for root jobs trying to use DW.

This change is already logged in the NEWS for v14.11.10

over the limit with grpwall on a QOS or association.

limit.

job QOS.

Previous logic would set the avail_node_bitmap when
a node was powered down, even if the initial state was
DOWN or DRAINED. This made the node available for allocation
to a job, which we don't want until the DOWN or DRAIN
state is cleared.
bug 1893

This reverts commits
7660da9e
5c386455 and
f6c5302b

Bug 1741

Bug 1896