More monitor logging updates:

- add logging to ObjectSynchronizer::omFlush()
- add global count logging at Info level to ObjectSynchronizer::finish_deflate_idle_monitors()
- for monitorinflation logging, switch from cumulative "deflating per-thread idle monitors" mesgs to per-thread "deflating per-thread idle monitors" mesgs
- fix timer bug in deflate_thread_local_monitors() where time to acquire gListLock wasn't counted
- fix misc typos.