Report job CPU binding per DebugFlags

The CPU binding should be based upon the CPU_Bind flag rather than
Select flag.
Add SLURM_CLUSTER_NAME to job environment

This applies to salloc, sbatch, and srun.
bug 1254
make inc21.30.2 look for CR_CORE* and multithreaded nodes.

Bug 1084
Fix typo in a comment
Merge branch 'slurm-14.11'

Conflicts:
	doc/man/man1/salloc.1
	doc/man/man1/sbatch.1
	doc/man/man1/srun.1