generate alloc_lps value from the core_bitmap.

 of sockets*cores*threads

    processor count if FastSchedule=0. Administrators must set a valid
    processor count although the memory and disk space configuration can
    be loaded from the compute node when it starts.
Validate that a node's configured Procs is consistent with the product
    of sockets*cores*threads.

we don't need to worry about this for select/linear or bluegene.

    node. If the node's configuration has been changed, then abort the job.

the bitmap if there are some nodes not found, previously stopped at 
that point, which made handling of nodes removed from slurm.conf more
difficult.

environment variables SLURM_NNODES and SLURM_NPROCS through to the
executable, rather than computing them from commandline parameters.

been allocated to a job (previously aborted slurmctld).

on the failure.

job go DOWN.

    for job step resource allocation (tracking of cpus in use was bad).

cr_preemption.patch from Chris Holmes.