along with other general bugfixes and cleanup.

 o cbuf.[ch] list.[ch] : begin using Chris' list and cbuf routines
   from the LSD-Tools project.

 o srun/srun.c : *Always* wait for I/O to complete. This still needs work.

 o srun/launch.c : code cleanup

from conman.

Avoid having two typedefs defined for slurm_addr.

mkdir2 checks for directory existence before attempting mkdir.

moved from common into api directory.

Use ELAN_MAX_VPS instead as defined in /usr/include/elan3/elanvp.h

to read config files with its internal functions. Add support for SlurmdLogFile
and SlurmdSpoolDir.

read_config functions.
slurmctld converted to common read_config functions.
slurmd changed only to use changed common function name.
reduncant function call removed from srun.

read_config functions.
slurmctld converted to common read_config functions.
slurmd changed only to use changed common function name.

read_config functions.
slurmctld converted to common read_config functions.

read_config functions.

SlurmdLogFile, and SlurmdSpoolDir.