This patch finally resolves absolute/relative CPU mapping for nodes
where the NUMA (or sockets) have different core counts (e.g. KNL SNC4).

bug 3090

Cray was having problems with this for some reason

Make sure no attempt is made to schedule a requeued job until all steps are
    cleaned (Node Health Check completes for all steps on a Cray).
bug 3082

unpacking fed_rec an empty allocated fed_rec.

Make sure no attempt is made to schedule a requeued job until all steps are
    cleaned (Node Health Check completes for all steps on a Cray).
bug 3082

Conflicts:
	src/slurmctld/job_mgr.c

Otherwise limit is checking the node count against the midplane count.

Bug 3049.

Check if node names are contiguous with respect to the node list
assigned to the partition, rather than just monotonically increasing.

Bug 3006.

xcgroup_delete will print a log message if there is a problem.

Bugs 2681 and 2703

Conflicts:
	NEWS

Change the pair of incorrect spellings in str_2_slurmdbd_msg_type
and slurmdbd_msg_type_2_str simultaneously to keep in sync.