Merge with 4.0.9

BitKeeper/etc/ignore:
  auto-union
client/mysqltest.c:
  Auto merged
configure.in:
  Auto merged
BitKeeper/deleted/.del-mutex.h~d3ae7a2977a68137:
  Auto merged
BitKeeper/deleted/.del-mutex.m4~a13383cde18a64e1:
  Auto merged
innobase/btr/btr0cur.c:
  Auto merged
innobase/btr/btr0pcur.c:
  Auto merged
innobase/log/log0log.c:
  Auto merged
innobase/srv/srv0srv.c:
  Auto merged
innobase/trx/trx0trx.c:
  Auto merged
myisam/mi_create.c:
  Auto merged
myisam/mi_unique.c:
  Auto merged
myisam/myisamchk.c:
  Auto merged
mysql-test/mysql-test-run.sh:
  Auto merged
mysql-test/r/group_by.result:
  Auto merged
mysql-test/r/merge.result:
  Auto merged
mysql-test/r/null.result:
  Auto merged
mysql-test/t/group_by.test:
  Auto merged
mysql-test/t/merge.test:
  Auto merged
mysql-test/t/null.test:
  Auto merged
scripts/mysql_fix_privilege_tables.sh:
  Auto merged
sql/field_conv.cc:
  Auto merged
sql/ha_myisammrg.cc:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/net_serv.cc:
  Auto merged
sql/opt_sum.cc:
  Auto merged
sql/protocol.cc:
  Auto merged
sql/sql_db.cc:
  Auto merged
sql/sql_load.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged
strings/Makefile.am:
  Auto merged
libmysql/Makefile.shared:
  merge
libmysql/libmysql.def:
  merge
sql/ha_innodb.cc:
  merge
sql/item_cmpfunc.cc:
  merge
sql/log_event.cc:
  merge
sql/sql_handler.cc:
  merge

sql/sql_table.cc

@@ -2030,12 +2030,9 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
     /* We changed a temporary table */
     if (error)
     {
-      /* 
-       * The following function call will also free a 
-       * new_table pointer.
-       * Therefore, here new_table pointer is not free'd as it is 
-       * free'd in close_temporary() which is called by by the 
-       * close_temporary_table() function.
+      /*
+	The following function call will free the new_table pointer,
+	in close_temporary_table(), so we can safely directly jump to err
       */
       close_temporary_table(thd,new_db,tmp_name);
       goto err;