The Target Offset Table (tot) is now reinitialized between passes.
Fixing the TOT - again...
Still fixing TOT
TOT is now fixed. The Worker Threads will now wait (in FIFO order) when
they come to a TOT entry that is currently in use. Once the owner worker
thread of a TOT entry has completed its I/O operation, it checks to see
if there are any waiting threads and releases the first one on the
"chain" of waiting worker threads. Rinse and repeat.
Also updated the debug and interactive routines that show the TOT
entries so that they show the TOT Wait as well.