MPIR_proctable is now supported.

Add --label.
Add --info.

Have slaunch only print its pid with "-vv" or higher.

and KEEP the port in host byte order until absolutely necessary to change
it back to network byte order.

Need to make port numbers be in host byte order by default so that this
confusion doesn't happen again.

Rework client_io_handler_create() to take a slurm_cred_t instead of just
the signature.  Makes life easier for the caller.

sattach is partially functional.

slurm_init_slurm_msg is replaced by slurm_msg_t_init and slurm_msg_t_copy.

slurm_msg_t_init COMPLETELY initializes the structure, so it needs to be
called BEFORE setting any variables within the structure.

It is not clear if slurm_msg_t_copy is even necessary, it is only used
in three places.

Add NextJobId to "scontrol show config" output.

added function to get the return code from different messages and also made it so reattach would wait for
 returning forwards

to see the bug it seems to be triggering in the forwarding code.

for all nodes.  This will allow us to use tree communication for the
reattach RPC in sattach.