Fix auto_inc locking bug introduced in ChangeSet@1.1794.1.1

innobase/row/row0mysql.c:
  Revert accidental modification to row_lock_table_autoinc_for_mysql()
  made in ChangeSet@1.1794.1.1
mysql-test/r/innodb.result:
  Revert ChangeSet@1.1794.1.1

innobase/row/row0mysql.c

@@ -696,7 +696,7 @@ run_again:
 
 	trx_start_if_not_started(trx);
 
-	err = lock_table(0, prebuilt->table, prebuilt->select_lock_type, thr);
+	err = lock_table(0, prebuilt->table, LOCK_AUTO_INC, thr);
 
 	trx->error_state = err;
 

mysql-test/r/innodb.result

@@ -431,7 +431,7 @@ Duplicate entry 'test2' for key 2
 select * from t1;
 id	ggid	email	passwd
 1	this will work		
-4	test2		this will work
+3	test2		this will work
 select * from t1 where id=1;
 id	ggid	email	passwd
 1	this will work