Add cgroup-based core specialization support
Changes for clean build
Minor clean-up of documentation

Minor format changes and added commas.
Print node core_spec details only if available

Print the nodes core specialization details only if there is
something available. Prior code might print blank line.
Make read config errors more explicit
Clean up core_spec data sent to scontrol

The logic would previously send either configured or found counts,
but they should never differ, so remove some redundant logic.
Purely cosmitic changes

Add some white space and other minor reformatting
Cosmitic changes

Add some white space and other minor reformatting
Change some print formats from %d to %u since the data is unsigned
Correct an incorrect xfree that should have been bit_free() or
  even better FREE_NULL_BITMAP()
Cosmetic changes
Plug several memory leaks in new core-spec code
Plug some memory leaks
Test suite mods for core specializaiton
Fix core spec test failure

The test7.3 program was run with CPUs_per_task == 0, which the
task distribution logic failed with (tried to bind the task to
no CPUs).
Plug cgroup memory leaks
Merge branch 'core_spec'