Modify the task affinity tests to support systems with larger CPU
counts. Use data type long long unsigned int rather than just int.
see bug 672

Permit user root to propagate resource limits higher than the hard limit
slurmd has on that compute node has (i.e. raise both current and maximum
limits).
bug 674674674674674674

Previous test would calculate negative new limits when original limits
were small.
See bug 675

Added SchedulerParameters options of bf_yield_interval and bf_yield_sleep
to control how frequently and for how long the backfill scheduler will
relinquish its locks.

Prevously reset only the counters, now reset the IDs to better
clean things up and avoid reporting a bunch of zero values.

Add rpc_num2string() function to convert RPC message type numbers
to strings and modify sdiag to use that for its RPC reports.

Conflicts:
	NEWS

if an job step's network value is set by poe, either by directly
executing poe or srun launching poe, that value was not being
propagated to the job step creation RPC and the network was not
being set up for the proper protocol (e.g. mpi, lapi, pami, etc.).
The previous logic would only work if the srun execute line
explicitly set the protocol using the --network option.

Permit multiple batch job submissions to be made for each run of the
scheduler logic if the job submissions occur at the nearly same time.
bug 616

Decrease maximimum scheduler main loop run time from 10 secs to
4 secs for improved performance.
If running with sched/backfill, do not run through all jobs on
periodic scheduling loop, but only the default depth. The
backfill scheduler can go through more jobs anyway due to its
ability to relinquish and recover locks.
See bug 616

if an job step's network value is set by poe, either by directly
executing poe or srun launching poe, that value was not being
propagated to the job step creation RPC and the network was not
being set up for the proper protocol (e.g. mpi, lapi, pami, etc.).
The previous logic would only work if the srun execute line
explicitly set the protocol using the --network option.

In select plugins, stop triggering extra logging based upon the debug flag
CPU_Bind and use SelectType instead.

Also remove some logging that we no longer want

Add data structures to track count and time of RPCs by RPC type
code and user ID.

Minor restructuring of code in sdiag. No real change in logic.