A post-merge fix (Bug#8706 "temporary table with data directory option

fails"

mysql-test/t/myisam.test

@@ -850,13 +850,13 @@ connect (session2,localhost,root,,);
 
 connection session1;
 disable_query_log;
-eval create temporary table t1 (a int) engine=myisam data directory="$MYSQL_TEST_DIR/var/tmp" select 9 a;
+eval create temporary table t1 (a int) engine=myisam data directory="$MYSQLTEST_VARDIR/tmp" select 9 a;
 enable_query_log;
 show create table t1;
 
 connection session2;
 disable_query_log;
-eval create temporary table t1 (a int) engine=myisam data directory="$MYSQL_TEST_DIR/var/tmp" select 99 a;
+eval create temporary table t1 (a int) engine=myisam data directory="$MYSQLTEST_VARDIR/tmp" select 99 a;
 enable_query_log;
 show create table t1;