HAMMER Utilities: enhanced show, timeout option

HAMMER Utilities: enhanced show, timeout option

* Enchange the show command when used with -vvv.  The command now reports
  directory entries and basic information about inodes.

* Add the [-t timeout] option.  The idea is to use this to limit the amount
  of time hammer spends reblocking or pruning a filesystem when running the
  command from a cron job.

* Adjust the format of the softlink option to be more consistent.