merge 4.1->5.0

mysql-test/r/group_by.result:
  Auto merged
mysql-test/r/metadata.result:
  Auto merged
mysql-test/r/union.result:
  Auto merged
mysql-test/t/union.test:
  Auto merged
sql/item.h:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
support-files/mysql.server.sh:
  Auto merged

1 files changed, 4 insertions, 3 deletions

diff --git a/sql/item_subselect.h b/sql/item_subselect.h
index 4661fae81da..e12c45b6e13 100644
--- a/sql/item_subselect.h
+++ b/sql/item_subselect.h
@@ -225,7 +225,8 @@ public:
 
   Item_in_subselect(Item * left_expr, st_select_lex *select_lex);
   Item_in_subselect()
-    :Item_exists_subselect(), abort_on_null(0), transformed(0), upper_item(0)
+    :Item_exists_subselect(), optimizer(0), abort_on_null(0), transformed(0),
+     upper_item(0)
   {}
 
   subs_type substype() { return IN_SUBS; }
@@ -236,8 +237,8 @@ public:
     was_null= 0;
   }
   trans_res select_transformer(JOIN *join);
-  trans_res single_value_transformer(JOIN *join,
-				     Comp_creator *func);
+  trans_res select_in_like_transformer(JOIN *join, Comp_creator *func);
+  trans_res single_value_transformer(JOIN *join, Comp_creator *func);
   trans_res row_value_transformer(JOIN * join);
   longlong val_int();
   double val_real();