Disk write is now functional, though performance is somewhat
questionable at this point.  It seems to be OK, but there is some
tweaking to be done I think.  Added a thread class to write the disk
image periodically during run time, currently every 60 seconds.  Need to
have it write to a temp file and then copy over current when completed
to prevent file corruption when process goes down mid-write.

Also added total events in Objectat to stats to accomodate the loading
of events at start.