Combine all outstanding patches into one /big patch/

Combine all outstanding patches into one /big patch/

o  Added seek absolute option -- allows one to specify whether they want
   seek distances to be calculated based upon nearness to previous IO or
   from start to start.

o  Added block number dumping

o  Updated btt documentation for above.

o  Significant clean up of memory used and files opened. All allocated
   memory and opened files are cleaned up prior to normal program exit.

o  Fixed problem where Q & M traces were not being freed properly.

o  Fixed problem where bilink structures were not being freed properly.

o  Fixed omission -- output combined seeks in addition to read and
   write seeks.

Signed-off-by: Alan D. Brunelle <Alan.Brunelle@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>