Added printf __attribute__ qualifiers to info, debug, ... to help prevent bad/incorrect parameters being sent to them.  Original patch from Eygene Ryabinkin <rea+slurm@grid.kiae.ru>

Modify the queue commands?\127 to report state of multiple clusters
    if the --clusters option is used.

    --clusters option is used.
Add support for SLURM_CLUSTERS environment variable in sinfo

    Database failure/restart, Slurmctld failure/restart.

NOTE: I was unable to figure out how to build and pass a
metatable from C, so I'm calling this done for now.

Add submit_uid to the job_submit function calls. add partition access filtering to the job_submit/lua plugin
(e.g. don't pass info about partition that this user can't access).

 have lua module reference C code to get/set job fields

  and env_array_overwrite() to wrappers for a single function to eliminate 
  duplicate code