Expose the static fetch_repos_info wc_db function to other wc_db source files.

* subversion/libsvn_wc/wc_db.c
  (fetch_repos_info): Rename to ...
  (svn_wc__db_fetch_repos_info): ... this, and drop 'static' marker.
  (svn_wc__db_base_get_info, svn_wc__db_base_get_children_info,
   svn_wc__db_external_read, db_op_copy_shadowed_layer,
   svn_wc__db_read_info, read_children_info, read_url_txn,
   svn_wc__db_global_relocate, svn_wc__db_scan_base_repos,
   svn_wc__db_scan_addition, has_switched_subtrees,
   svn_wc__db_base_get_lock_tokens_recursive): Update callers.





git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1447743 13f79535-47bb-0310-9956-ffa450edef68