fixed linking issues for real this time.  Now if libcommon changes in any way the thing linking to it will recompile libcommon.o

    to schedule job if some nodes have not associated features).

minor sacctmgr code clean-up without any change in logic

iniitialize to NO_VAL not (uint32_t)-2
and make sure input values are numbers

days-hours:min:sec or mins etc

  SLURM association policy.

ok for linux we have tested this.  We are now exporting all symbols from libcommon to slurmctld and slurmd

    command in both /bin and /usr/sbin (for Suse Linux).

(plus time to deallocate a block 5min, plus incremental time per 
midplane 20sec)

altered bg_job_place to only really work in a bluegene type system since aix doesn't like some of it's functions