Bug#12565712 - 61205: "QUERIES PER SECOND AVG" VALUE IN STATUS OUTPUT IS INCORRECT

Before this fix, a server executing 1009 queries in 1000 seconds would give a status of:
Queries per second avg: 1.9
The printf format used to print the decimal part, computed separately, is incorrect.

With this fix, the correct result is printed:
Queries per second avg: 1.009

Tested manually, no test case provided.

sql/sql_parse.cc

@@ -1308,7 +1308,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
     length= my_snprintf(buff, buff_len - 1,
                         "Uptime: %lu  Threads: %d  Questions: %lu  "
                         "Slow queries: %lu  Opens: %lu  Flush tables: %lu  "
-                        "Open tables: %u  Queries per second avg: %u.%u",
+                        "Open tables: %u  Queries per second avg: %u.%03u",
                         uptime,
                         (int) thread_count, (ulong) thd->query_id,
                         current_global_status_var.long_query_count,