docs: def get_jottapath(localtopdir, dirpath, jottamountpoint):
      """Translate localtopdir to jottapath. Returns unicode string"""
      log.debug("get_jottapath %r %r %r", localtopdir, dirpath, jottamountpoint)
      normpath =  posixpath.normpath(posixpath.join(jottamountpoint, posixpath.basename(localtopdir),
                                     posixpath.relpath(dirpath, localtopdir)))
      return _decode_filename_to_unicode(normpath)