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

cr_preemption.patch from Chris Holmes.

changed the unpack_error: code in the slurm_protocol_pack to call the slurm_free_* functions in the _defs.c instead of local frees.

--cpus-per-task across multiple nodes. 
1.4_split_cpus.patch from Chris Holmes.

Report value with "scontrol show config"

req_node_fix.patch from Chris Holmes.

zero of the allocation.

debug_flag=step

    non-sharing partitions.
    preempt_linear.patch from Chris Holmes