Add missing SVN_DEPRECATED tags on functions being deprecated for 1.8.

* subversion/include/svn_client.h
  (svn_client_move6): As above.

* subversion/include/svn_io.h
  (svn_io_stat_dirent,
   svn_io_start_cmd2): As above.

* subversion/include/svn_repos.h
  (svn_repos_begin_report2): As above.

* subversion/include/svn_utf.h
  (svn_utf_initialize): As above. Also correct the cross-reference to the
    newer function.

* subversion/include/svn_wc.h
  (svn_wc_move): As above.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1466965 13f79535-47bb-0310-9956-ffa450edef68