Correct option string for --specify-log.
Merge branch 'master' of github.com:cooperative-computing-lab/cctools
The update message reports the total slots. So use the  difference between
update message values to compute total_worker_slots.
Update total_worker_slots when we remove a worker/foreman.
Add debug statement when we update total_worker_slots.
Merge branch 'master' of github.com:cooperative-computing-lab/cctools
Adds monitoring of swap usage in linux.