requests no time limit.

http://bugs.schedmd.com/show_bug.cgi?id=2177

Avoid logging every time that some interaction with the elasticsearch
server happens. That would generate too many log messages.
Fix allignment problem in the code without changing logic.

Added a limit of MAX_JOBS 100000 jobs enqueued and waiting to be indexed

Usernames are comma separated, not colon delimited. Bug #2222.
While here fix a few spelling mistakes.

Fixed a typo that was causing slurm_cred_copy to segfault

If a job is configured to be sent a signal when approaching its
timeout and the job is requeued after the signal is sent, then
resend the signal at the approriate time after requeue.
bug 1415

If the backfill scheduler can not start at the appointed time, say
because there are too many pending RPC, then only sleep 1 second
and try again rather than the full bf_interval (30 seconds by default).

Same logic was in both backfill plugin and slurmctld/job_scheduler.c
No change in logic

Bug 2130

Adopted processes didn't have access to the job's devices.

Bug 2130

Full revert of c2fbf88f, 13b64c35 had caught part of this, but
this will revert it completely.  The code just wasn't needed in modern
Slurm.  It appears the patch came from an older version of Slurm that
didn't handle this correctly.

This reverts commit 29f25688.

Conflicts:
	NEWS

Looks like this isn't needed, commit c2fbf88f doesn't appear to be needed
and is what is causing this issue.  c2fbf88f was added from an older
version of Slurm where this was already handled correctly in commit
815e5a44.

get messages like

slurmctld: error: _handle_assoc_tres_run_secs: job 33355: assoc 1 TRES node grp_used_tres_run_secs underflow, tried to remove 21 seconds when only 0 remained.

which are bad.

If a store fails, do not retry for 30 seconds

Cray job NHC delayed until after burst buffer released and epilog completes
    on all allocated nodes.
bugs 2099 and 2192

Add new buffer state of BB_STATE_POST_RUN indicating the post_run
  operation has been started
Add new bb_p_job_test_post_run function to test status of post_run
  operation
Execute post_run operation before the stage_out operation to opimize
  use of compute nodes (rather than burst buffer space)

Release a job's allocated licenses only after epilog runs on all nodes
    rather than at start of termination process.
bug 2192

sched/backfill - Delay backfill scheduler for completing jobs only if
    CompleteWait configuration parameter is set (make code match documentation).

moved code to common location.

Addition to b9668b2b

Bug 2030

Invalid user input could generate slurmctld error(), changed to info()

Eliminated redundant data structure
Minor performance improvements

correctly when PriorityFlags=CALCULATE_RUNNING is set.

Previously the slurmctld could seg fault if the tres_alloc_str is NULL.