Merge 4.1 -> 5.0

BitKeeper/etc/ignore:
  auto-union
BitKeeper/etc/logging_ok:
  auto-union
VC++Files/sql/mysqld.dsp:
  Auto merged
configure.in:
  Auto merged
include/my_global.h:
  Auto merged
include/mysql_com.h:
  Auto merged
libmysql/libmysql.c:
  Auto merged
libmysqld/Makefile.am:
  Auto merged
myisam/myisamchk.c:
  Auto merged
myisam/myisamdef.h:
  Auto merged
mysql-test/install_test_db.sh:
  Auto merged
mysql-test/r/func_time.result:
  Auto merged
mysql-test/r/mysqldump.result:
  Auto merged
mysql-test/r/show_check.result:
  Auto merged
mysql-test/r/subselect.result:
  Auto merged
mysql-test/r/union.result:
  Auto merged
mysql-test/t/func_time.test:
  Auto merged
mysql-test/t/subselect.test:
  Auto merged
scripts/make_binary_distribution.sh:
  Auto merged
scripts/mysql_install_db.sh:
  Auto merged
sql/ha_berkeley.cc:
  Auto merged
mysql-test/t/rpl_error_ignored_table.test:
  Auto merged
sql/ha_berkeley.h:
  Auto merged
sql/ha_innodb.cc:
  Auto merged
sql/ha_innodb.h:
  Auto merged
sql/ha_myisam.cc:
  Auto merged
sql/handler.cc:
  Auto merged
sql/handler.h:
  Auto merged
sql/item.cc:
  Auto merged
sql/item.h:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/item_cmpfunc.h:
  Auto merged
sql/item_subselect.cc:
  Auto merged
sql/item_sum.cc:
  Auto merged
sql/item_sum.h:
  Auto merged
sql/lex.h:
  Auto merged
sql/log.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/protocol.cc:
  Auto merged
sql/records.cc:
  Auto merged
sql/set_var.cc:
  Auto merged
sql/sql_acl.cc:
  Auto merged
sql/sql_acl.h:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_cache.cc:
  Auto merged
sql/sql_class.cc:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_db.cc:
  Auto merged
sql/sql_delete.cc:
  Auto merged
sql/sql_insert.cc:
  Auto merged
sql/sql_lex.cc:
  Auto merged
sql/sql_load.cc:
  Auto merged
sql/sql_prepare.cc:
  Auto merged
sql/sql_select.h:
  Auto merged
sql/sql_show.cc:
  Auto merged
sql/sql_string.cc:
  Auto merged
sql/sql_test.cc:
  Auto merged
sql/sql_update.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged
sql/table.h:
  Auto merged
tests/client_test.c:
  Auto merged

sql/sql_lex.cc

@@ -869,13 +869,15 @@ int yylex(void *arg, void *yythd)
       }
       yySkip();
       return (SET_VAR);
-    case MY_LEX_COLON:			// optional line terminator
+    case MY_LEX_SEMICOLON:			// optional line terminator
       if (yyPeek())
       {
-        if (((THD *)yythd)->client_capabilities & CLIENT_MULTI_STATEMENTS)
+        THD* thd= (THD*)yythd;
+        if ((thd->client_capabilities & CLIENT_MULTI_STATEMENTS) && 
+            (thd->command != COM_PREPARE))
         {
           lex->found_colon=(char*)lex->ptr;
-          ((THD *)yythd)->server_status |= SERVER_MORE_RESULTS_EXISTS;
+          thd->server_status |= SERVER_MORE_RESULTS_EXISTS;
           lex->next_state=MY_LEX_END;
           return(END_OF_INPUT);
         }
@@ -1012,6 +1014,7 @@ void st_select_lex::init_query()
   ref_pointer_array= 0;
   select_n_having_items= 0;
   prep_where= 0;
+  explicit_limit= 0;
 }
 
 void st_select_lex::init_select()
@@ -1520,7 +1523,7 @@ bool st_select_lex::setup_ref_array(THD *thd, uint order_group_num)
 */
 bool st_select_lex_unit::check_updateable(char *db, char *table)
 {
-  for(SELECT_LEX *sl= first_select(); sl; sl= sl->next_select())
+  for (SELECT_LEX *sl= first_select(); sl; sl= sl->next_select())
     if (sl->check_updateable(db, table))
       return 1;
   return 0;
@@ -1605,10 +1608,7 @@ void st_select_lex::print_limit(THD *thd, String *str)
   if (!thd)
     thd= current_thd;
 
-  if ((select_limit != thd->variables.select_limit &&
-       this == &thd->lex->select_lex) ||
-      (select_limit != HA_POS_ERROR && this != &thd->lex->select_lex) ||
-      offset_limit != 0L)
+  if (explicit_limit)
   {
     str->append(" limit ", 7);
     char buff[20];
@@ -1644,6 +1644,75 @@ void st_select_lex_unit::set_limit(SELECT_LEX *values,
     sl->options&= ~OPTION_FOUND_ROWS;
 }
 
+
+/*
+  Unlink first table from global table list and first table from outer select
+  list (lex->select_lex)
+
+  SYNOPSIS
+    unlink_first_table()
+    tables		Global table list
+    global_first	Save first global table here
+    local_first		Save first local table here
+
+  NORES
+   global_first & local_first are used to save result for link_first_table_back
+
+  RETURN
+    global list without first table
+
+*/
+TABLE_LIST *st_lex::unlink_first_table(TABLE_LIST *tables,
+				       TABLE_LIST **global_first,
+				       TABLE_LIST **local_first)
+{
+  *global_first= tables;
+  *local_first= (TABLE_LIST*)select_lex.table_list.first;
+  /*
+    Exclude from global table list
+  */
+  tables= tables->next;
+  /*
+    and from local list if it is not the same
+  */
+  select_lex.table_list.first= ((&select_lex != all_selects_list) ?
+				(byte*) (*local_first)->next :
+				(byte*) tables);
+  (*global_first)->next= 0;
+  return tables;
+}
+
+
+/*
+  Link table back that was unlinked with unlink_first_table()
+
+  SYNOPSIS
+    link_first_table_back()
+    tables		Global table list
+    global_first	Saved first global table
+    local_first		Saved first local table
+
+  RETURN
+    global list
+*/
+TABLE_LIST *st_lex::link_first_table_back(TABLE_LIST *tables,
+					  TABLE_LIST *global_first,
+					  TABLE_LIST *local_first)
+{
+  global_first->next= tables;
+  if (&select_lex != all_selects_list)
+  {
+    /*
+      we do not touch local table 'next' field => we need just
+      put the table in the list
+    */
+    select_lex.table_list.first= (byte*) local_first;
+  }
+  else
+    select_lex.table_list.first= (byte*) global_first;
+  return global_first;
+}
+
 /*
   There are st_select_lex::add_table_to_list & 
   st_select_lex::set_lock_for_tables are in sql_parse.cc