Threaded console, threaded cleanup. Yes!

Made the threaded console to batch messages and so I could manually
flush or clear them.  At some point I would consider a safety maximum
buffer size that triggers it to auto flush. This worked out really well,
though I have to see why in some cases lines appear to double up still,
could be something with the process not completing when I expect it to.

This is possible a naive thread implementation, since it pushes a
directory for every thread which seems too drastic. I'd like to see how
much better it works without all the context switches.  It's also a
matter of figuring out how much to handle yourself before letting
another thread join in.  Right now the threads don't branch out too much
since I think they basically do a breadth-first search, though I have to
double check on that.

Still to come, trying to safely work with fstat across multiple
directories. It's fast, but on the console the script would appear to
stall as it parses everything, so I'd still want to break it down
somewhat so you can see the script making visible progress.  I would
also prefer this because then console messages wouldn't be so short and
blocky.

Improvements to come!