tcplay - update to version 0.9

tcplay - update to version 0.9

new stuff of relevance to DragonFly:
 * Backup header is now written on volume creation.

 * custom humanize function that is more flexible in what it understands
   and produces nicer results for tcplay, as well as being portable.

 * support for non-512 byte sector size

 * better memory freeing. Instead of just doing lazy freeing at end of
   API operations or execution, free up as much as possible after each
   individual operation.

 * Bug fix: adjust volume size so backup header is never overwritten.