Make _slurm_init_msg_engine() tollerate bug in bind() returning a busy
ephemeral port.
Job array scheduling bug

Don't block scheduling of entire job array if it could run in multiple
partitions.
bug 726
backfill -fix for array scheduling

Don't block scheduling of entire job array if it could run in multiple
partitions. Backfill fix to match related to commit
c075ac750424dc1a59ad6eeab0f104248d672a38
bug 726
Merge branch 'slurm-14.03'