step_ptr->job_ptr is already dereferenced several times by now, so
null check is unnecessary here.

Conflicts:
	NEWS
	src/plugins/accounting_storage/mysql/as_mysql_resv.c

If a job fails stage in, set its reason to BurstBufferOperation
with a string describing what happened. Previously the reason was
set to AdminHeld on stage-in failure.

For commits:
f980c588
510abf23

MB for memory and bb.

Bug 1783

select/cray - Initiate step node health check at start of step termination
    rather than after application completely ends so that NHC can capture
    information about hung (non-killable) processes.
bug 2192

the message.  This was needed for sbcast or srun --bcast since the
tree width is different than the default.

Bug 2512

Make default compression vary based on library availability.

A node's CPULoad was getting reset to NoVal on reconfiguration.
This change preserves the old value, which can fix a possible
race condition with respect to test4.13

Calling functions all moved to src/bcast/

power/cray - Fix bug introduced in 15.08.10 preventin operation in many
    cases.
bug 2628

Was printing integer using %u format

burst_buffer/cray - Fix for script creating or deleting persistent buffer
    would fail "paths" operation and hold the job.
bug 2624

and it doesn't meet basic requirements.

Test previously failed with heterogeous nodes (i.e. different
core counts on different nodes).
bug 2597

that wasn't set up correctly.

We know it is in 1.7.1 but not in 1.3.0

tree_msg_to_stepds() which does the same thing.

nodes not able to contact.

power/cray - Fix bug introduced in 15.08.10 preventin operation in many
    cases.
bug 2628

Bug 2431

Was printing integer using %u format

burst_buffer/cray - Fix for script creating or deleting persistent buffer
    would fail "paths" operation and hold the job.
bug 2624