file read. Still need to add data broadcast and write.

Fix return code handling in the src/api/signal.c code.

which was causing build problems.  (Using srun_job_t in src/common was
not a good idea anyway.)

Remove debugging messages

    of SlurmdTimeout and SlurmctldTimeout for communications to slurmd and
    slurmctld daemons repsectively.

just keep trying.