Remove unused prototype
Make -a obsolete, accept -M as an option.
-c implies -A
Correct error messages
Factorize pool_config creation with defaults.
Clean wq pool config reading to make options evident.
wq_pool man auto pool documentation.

Still missing billing_cycle and worker_terminate_boundary.
Make sure min_workers greater than 0.
Merge branch 'wq_pool_fixes' of git://github.com/btovar/cctools into btovar-wq_pool_fixes

Documents wq auto pool. (Still missing billing_cycle and worker_termination_boundary, I'm looking for simpler explanations.)
Sanity check on min_workers.
Cleaned parsing of options.
Fixed show_help.
Deprecates -a.
-c implies -A