Fix subselect results (there was a bad merge when subselect test was disabled)

BitKeeper/etc/ignore:
  Added scripts/mysql_upgrade to the ignore list
mysql-test/r/subselect.result:
  Update results

.bzrignore

@@ -1273,3 +1273,4 @@ vio/viotest-sslconnect.cpp
 vio/viotest.cpp
 zlib/*.ds?
 zlib/*.vcproj
+scripts/mysql_upgrade

mysql-test/r/subselect.result

@@ -215,9 +215,9 @@ select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from
 a
 select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4;
 b	(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2)
-8	7.5
-8	4.5
-9	7.5
+8	7.5000
+8	4.5000
+9	7.5000
 explain extended select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t4	ALL	NULL	NULL	NULL	NULL	3