LP:695923 - Wrong recommendation for parameter log_slow_queries in warning during startup

101231  8:15:47 [Warning] '--log_slow_queries' is deprecated and will be removed in a future release. Please use ''--slow_query_log'/'--log-slow-file'' instead.

   6393   {"log-slow-queries", OPT_SLOW_QUERY_LOG,

   6394     "Log slow queries to a table or log file. Defaults logging to table "

   6395     "mysql.slow_log or hostname-slow.log if --log-output=file is used. "

   6396     "Must be enabled to activate other slow log options. "

   6397     "(deprecated option, use --slow_query_log/--slow_query_log_file instead)",

   6398    &opt_slow_logname, &opt_slow_logname, 0, GET_STR, OPT_ARG,

   6399    0, 0, 0, 0, 0, 0},

   8757   case (int) OPT_SLOW_QUERY_LOG:

   8758     WARN_DEPRECATED(NULL, "7.0", "--log_slow_queries", "'--slow_query_log'/'--log-slow-file'");

   8759     opt_slow_log= 1;

   8760     break;