Cgroup plugins update

For a long time configure has modified the SLURM Release number
as set in META by stripping off everything before the last '.'
when building the SLURM_VERSION_STRING. This was done so that a
release number of 0.pre1 would become just 'pre1' in the version
string printed by SLURM commands. (e.g. slurm-2.3.0-0.pre1 becomes
slurm-2.3.0-pre1 in sinfo --version).

In attempting to create a new version 2.3.0-2.x of SLURM (branched
from 2.3.0-2), it was found that this method is overzealous, and
results in a version string of just "2.3.0-1" instead of the expected
"2.3.0-2.1". Since the intent of the sed command is only to remove
'0.' from prereleases, this patch makes that explicit, so that
non-prerelease versions branched of tagged SLURM releases keep the
original Release number in the version string.

Preserve the address information about nodes in the cloud after a reconfigure

if any message comes through, and since we have states of cnodes in
the status threads we don't need to keep retrying to send the message of
cnodes in error if the slurmctld is down.

parameter to the bluegene.conf file, MaxBlockInError, which is a percentage
of a block that can be in an error state before future jobs are disallowed
to run on the block.

in the system.  cnode_err_bitmap is used to tell if there are cnodes in
an error state in the usable portion of the midplane.  cnode_usable_bitmap
is used to tell what part of the midplane is usable, typically used for
small blocks which only use a portion of a midplane.

picking cnodes for a step.

midplane that isn't the first midplane in the block.

for blocks and all other hardware, so we can sync correctly.

can access it.

hasty.

Cray - Fix for srun.pl parsing to avoid adding spaces between option and
argument (e.g. "-N2" parsed properly without changing to "-N 2").

Make sure that salloc and sbatch spawned programs get the correct
SLURM_NODE_ALIASES environment variable in the event that some nodes
need to be booted when the allocation is made and thus the node
addresses are not available until later.