updated return codes from slurm_send_recv_rc_msg_only_one and slurm_send_recv_contoller_rc_msg to either 0 or -1 and added error checking to api/signal.c

call to slurm_open_controller_conn

    job as CANCELLED rather than COMPLETED and change its start and end time
    to that time.

of running autogen.sh.  Now it is no longer necessary to run "./autogen.sh"
after checking out SLURM; you can go straight to "./configure".

correct pointer to MPICH2 site, 
use different prompt within srun --allocate for clarity.

(e.g. LCRM). They need to use prm to avoid getting LCRM out of sync.