cache from becoming corrupted when a hostname cannot be resolved.

 a job has reliquished resources

    on each node after releasing some nodes from the job's allocation.

  notes.

    Avoid killing the job step on remaining nodes. Patch from Rod Schultz
    (BULL).

    Previously, some commands support one of those options, but not the other.

    checkpoint and requeue a batch job. Note, there appear to be some
    problems with checkpoint/blcr which are unrelated to these changes.

Patch from Janne Blomqvist.

slurm_job_step_pids_free() in some places. Apparent bug in 
patch from BULL.

processing for sparce compute node arrays

    hostlist_ranged_string_xmalloc, hostlist_deranged_string_malloc, and
    hostlist_deranged_string_xmalloc which will allocate memory as needed.

    fixed size buffers (typically 8192 bytes). This patch fixes many, but not
    all possible problems.

non-BlueGene system

    state, completing, Patch from Hongjia Cao (NUDT).