Remove some uses of deprecated svn_path_join().
Remove some uses of deprecated svn_path_join().

* subversion/libsvn_client/mergeinfo.c
  (svn_client__adjust_mergeinfo_source_paths): Replace svn_path_join()
    with svn_uri_join(). An svn_mergeinfo_t key is the "base" parameter.
  (svn_client__get_wc_mergeinfo): Replace svn_path_join() with
    svn_relpath_join(). The "base" parameter is created with a relative
    path from svn_dirent_dirname().
  (svn_client_mergeinfo_get_merged): Replace svn_path_join() with
    svn_uri_join(). target_repos_root is the "base" parameter.

Patch by: Daniel Näslund <daniel{_AT_}longitudo.com>
Suggested by: dlr


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@880515 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion