mark some file to been opensource for ce-farm

tools/deploy/mysql_test/r/mysql/join_null.result

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+drop table if exists t1,t2,t5,t6;
+CREATE TABLE t1 (
+pk int primary key,
+id int,
+gender varchar(1)
+);
+CREATE TABLE t2 (
+user_id int primary key,
+birthday datetime
+);
+insert into t1 values (1, NULL, 'M'), (2, 1, 'M'), (3, 2, 'F'),(4, 3, 'F'),(5, 4, 'F'),(6, 5, 'M');
+insert into t2 values (1, '2002-06-09 00:00:00'),(2, '2002-06-09 00:00:00'),(100, '2002-06-09 00:00:00'),
+(3, '2002-06-09 00:00:00'),(4, '2002-06-09 00:00:00');
+select  id,gender,user_id from  t1,t2  where t2.user_id=t1.id;
+id	gender	user_id
+1	M	1
+2	F	2
+3	F	3
+4	F	4
+create table t5(a int);
+create table t6(a int);
+insert into t5 values (null), (null);
+insert into t6 values (null), (null);
+select * from t5, t6 where t5.a <=> t6.a;
+a	a
+NULL	NULL
+NULL	NULL
+NULL	NULL
+NULL	NULL
+drop table t1,t2,t5,t6;