On the verify-keep-going branch, perform several mostly stylistic tweaks.
No functional change.

* subversion/svnadmin/svnadmin.c
  (error_list): This structure is an element of a list of verification
   errors, not a list of errors, so rename it to ...
  (verification_error): ... this.
  (err_cleanup): Don't pass a void pointer to svn_error_clear().
  (populate_summary): Remove, this is now inlined in its only caller.
  (repos_notify_handler_baton): Document members of this struct.
  (repos_notify_handler): Inline populate_summary() here.
  (subcommand_verify): Don't create an error summary list and result
   pool for the notification handler if we're not in --keep-going mode.
  (subcommand_verify): Tweak comment. Track 'error_list' renaming.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/verify-keep-going@1546103 13f79535-47bb-0310-9956-ffa450edef68