Update test results after SHOW EXPLAIN merge-in.

mysql-test/suite/multi_source/simple.result

@@ -6,7 +6,7 @@ include/wait_for_slave_to_start.inc
 set default_master_connection = 'slave2';
 start all slaves;
 Warnings:
-Note	1936	SLAVE 'slave2' started
+Note	1937	SLAVE 'slave2' started
 include/wait_for_slave_to_start.inc
 set default_master_connection = '';
 show all slaves status;
@@ -67,7 +67,7 @@ Connection_name	Slave_SQL_State	Slave_IO_State	Master_Host	Master_User	Master_Po
 slave2	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	286	mysqld-relay-bin-slave2.000002	572	master-bin.000001	Yes	Yes							0		0	286	875	None		0	No						0	No	0		0			2	0	1073741824	6	0	60.000
 stop all slaves;
 Warnings:
-Note	1937	SLAVE 'slave2' stopped
+Note	1938	SLAVE 'slave2' stopped
 show all slaves status;
 Connection_name	Slave_SQL_State	Slave_IO_State	Master_Host	Master_User	Master_Port	Connect_Retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_Do_DB	Replicate_Ignore_DB	Replicate_Do_Table	Replicate_Ignore_Table	Replicate_Wild_Do_Table	Replicate_Wild_Ignore_Table	Last_Errno	Last_Error	Skip_Counter	Exec_Master_Log_Pos	Relay_Log_Space	Until_Condition	Until_Log_File	Until_Log_Pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key	Seconds_Behind_Master	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Retried_transactions	Max_relay_log_size	Executed_log_entries	Slave_received_heartbeats	Slave_heartbeat_period
 slave2			127.0.0.1	root	MYPORT_2	60	master-bin.000001	286	mysqld-relay-bin-slave2.000002	572	master-bin.000001	No	No							0		0	286	875	None		0	No						NULL	No	0		0			2	0	1073741824	6	0	60.000