after merging fix (update SCRUM?)

mysql-test/t/subselect.test

@@ -114,6 +114,7 @@ EXPLAIN SELECT DISTINCT date FROM searchconthardwarefr3 WHERE date='2002-08-03';
 EXPLAIN SELECT (SELECT DISTINCT date FROM searchconthardwarefr3 WHERE date='2002-08-03');
 SELECT DISTINCT date FROM searchconthardwarefr3 WHERE date='2002-08-03';
 SELECT (SELECT DISTINCT date FROM searchconthardwarefr3 WHERE date='2002-08-03');
+SELECT 1 FROM searchconthardwarefr3 WHERE 1=(SELECT 1 UNION SELECT 1) UNION ALL SELECT 1;
 -- error 1240
 SELECT 1 FROM searchconthardwarefr3 WHERE 1=(SELECT 1 UNION ALL SELECT 1) UNION SELECT 1;
 EXPLAIN SELECT 1 FROM searchconthardwarefr3 WHERE 1=(SELECT 1 UNION SELECT 1);
@@ -181,7 +182,6 @@ EXPLAIN SELECT numreponse FROM threadhardwarefr7 WHERE numeropost='1' AND numrep
 EXPLAIN SELECT MAX(numreponse) FROM threadhardwarefr7 WHERE numeropost='1';
 EXPLAIN SELECT numreponse FROM threadhardwarefr7 WHERE numeropost='1' AND numreponse=(SELECT MAX(numreponse) FROM threadhardwarefr7 WHERE numeropost='1');
 drop table if exists threadhardwarefrtest7;
-drop table searchconthardwarefr3;
 
 #update with subselects
 create table t1 (a int NOT NULL, b int, primary key (a));

sql/sql_lex.cc

@@ -149,7 +149,7 @@ LEX *lex_start(THD *thd, uchar *buf,uint length)
   lex->select_lex.expr_list.empty();
   lex->select_lex.ftfunc_list_alloc.empty();
   lex->select_lex.ftfunc_list= &lex->select_lex.ftfunc_list_alloc;
-  lex->select= &lex->select_lex;
+  lex->current_select= &lex->select_lex;
   lex->convert_set= (lex->thd= thd)->variables.convert_set;
   lex->yacc_yyss=lex->yacc_yyvs=0;
   lex->ignore_space=test(thd->sql_mode & MODE_IGNORE_SPACE);

sql/sql_update.cc

@@ -68,7 +68,6 @@ int mysql_update(THD *thd,
   LINT_INIT(used_index);
   LINT_INIT(timestamp_query_id);
 
-  table_list->lock_type= lock_type;
   if ((open_and_lock_tables(thd, table_list)))
     DBUG_RETURN(-1);
   fix_tables_pointers(&thd->lex.select_lex);

sql/sql_yacc.yy

@@ -1631,7 +1631,7 @@ select_init:
 select_part2:
 	{
 	  LEX *lex=Lex;
-	  if (lex->select == &lex->select_lex)
+	  if (lex->current_select == &lex->select_lex)
 	    lex->lock_option= TL_READ; /* Only for global SELECT */
 	  mysql_init_select(lex);
 	}