Wrong recommendation for parameter log_slow_queries in warning during startup

[shinguz]

When I start the database with:

log_slow_queries = 0

I get the following warning:

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.

This is a wrong recommendation. log-slow-file is deprecated as well and slow_query_log should be used 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;

It also looks like we have redundant code here!