Finish issue #2844 ('take care of "TODO(sd)" comments'):
Finish issue #2844 ('take care of "TODO(sd)" comments'):

* subversion/include/svn_repos.h
  (svn_repos_dir_delta2): Document depth parameter.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@866822 13f79535-47bb-0310-9956-ffa450edef68

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