[droids] AbstractDroid legacy variables?

[Ryan McKinley]

I'm looking over AbstractDroid and can't figure out what a lot of it  
does (if anything)

There seem to be a lot of public setters on functions that would surly  
wreck havoc if they were ever set externally.

Consider:
  setPool()
 setRunningWorker()

Also, a few variables don't appear to have any real use:
 freeSlots
 runningThreads
 taskDate  -- set once when the droid starts?!  it should be  
initialized when the task starts

The accurate value would be calculated from the ThreadPoolExecutor

ryan