some test cases for the bugs being fixed

.bzrignore

@@ -513,3 +513,6 @@ innobase/stamp-h1
 myisam/rt_test.MYD
 myisam/rt_test.MYI
 stamp-h1
+libmysqld/sql_help.cc
+scripts/fill_func_tables
+scripts/fill_func_tables.sql

mysql-test/r/derived.result

@@ -18,3 +18,9 @@ a	y
 3	3
 3	3
 drop table if exists  t1.t2,t3;
+select * from (select 1);
+1
+1
+select a from (select 1 as a);
+a
+1

mysql-test/t/derived.test

@@ -9,3 +9,5 @@ CREATE TABLE t3 (a int not null, b char (10) not null);
 insert into t3 values (3,'f'),(4,'y'),(5,'z'),(6,'c');
 select t1.a,t4.y from t1,(select t2.a as y from t2,(select t3.b from t3 where t3.a>3) as t5  where t2.b=t5.b) as t4  where t1.a = t4.y;
 drop table if exists  t1.t2,t3;
+select * from (select 1);
+select a from (select 1 as a);