select/cray plugin

Adds parsing of MPMD file to create tables for Cray support.
Work is incomplete.

sync comment with new PW_BUF_SIZE

Do not reset a job's priority when the slurmctld restarts if previously
set to some specific value.
bug 561

No change in functionality

a hostlist_push() was changed to hostlist_push_host_host() rather
than just hostlist_push_host
See commit 1b0b135f

Log why a suspend or resume program is invalid

groups.

hostlist_push_host().

are not longer set DOWN, they are set to DRAIN instead.

Core specialization is now fully supported.

This reverts commit 3464295e.

Make sure that licenses are not oversubscribed in overlapping
reservations.

Conflicts:
	src/slurmctld/node_scheduler.c

Do not mark the node DOWN if its memory or tmp disk space is lower
than configured, just log it using debug message type

The previous changes in commit bc3d8828
failed to address some accounting issues addressed here.

parameter in slurm.conf.

is done. Fix bugs.

Conflicts:
	src/slurmctld/job_mgr.c

If a job is explicitly suspended, its priority is set to zero.
This resets the priority when requeued and also documents that
if the job is requeued (e.g. due to a node failure), then it
is placed in a held state.