(as well as the reverse) in all qsw code.

 - move elanhosts.[ch] to common
 - initialize elanhost_config on demand in qsw.c
 - remove calls to elanhosts in slurmd/elan_interconnect.c
 - merge libhostlist into libcommon since elanhosts needs it.

completion plugin.

 o set exit code to 1 if any tasks failed

   to srun or slurmctld.
 o new errno ESLURMD_UID_NOT_FOUND

functions, but only for a single task. Multi-task support will need to
wait for modifications to srun and its communications protocol.

sharing via node record of job count (0 | 1) and bitmap of nodes which
permit sharing. Previous logic could permit a job accepting shared nodes
to be scheduled on a node that already had a running job not accepting
shared nodes.

Just log open failure and continue.

failure as fatal error.

failure, log with fatal() and exit.

exit rather than log with error() and continue (which causes abnormal behavior).

job logs, state save directories, etc.

configuring the user authentication mechanism.

its support.

Update configuration parameter information for slurm version 0.3.

 o more fixes for setenvpf() corner cases
 o move tmpdir logic up so it is not executed unecessarily for every task.
 o add getenvp() call to setenvpf.c