Merge

BitKeeper/etc/logging_ok:
  auto-union
BUILD/autorun.sh:
  Auto merged
BitKeeper/etc/config:
  Auto merged
Makefile.am:
  Auto merged
include/my_bitmap.h:
  Auto merged
libmysqld/Makefile.am:
  Auto merged
mysql-test/mysql-test-run.pl:
  Auto merged
mysql-test/mysql-test-run.sh:
  Auto merged
mysql-test/r/grant.result:
  Auto merged
mysql-test/r/ps_6bdb.result:
  Auto merged
mysql-test/r/ps_7ndb.result:
  Auto merged
mysys/Makefile.am:
  Auto merged
mysys/default.c:
  Auto merged
scripts/mysql_create_system_tables.sh:
  Auto merged
scripts/mysql_fix_privilege_tables.sql:
  Auto merged
sql/Makefile.am:
  Auto merged
sql/field.cc:
  Auto merged
sql/field.h:
  Auto merged
sql/ha_ndbcluster.h:
  Auto merged
sql/handler.cc:
  Auto merged
sql/handler.h:
  Auto merged
sql/item.cc:
  Auto merged
sql/log_event.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/opt_range.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.h:
  Auto merged
sql/sql_delete.cc:
  Auto merged
sql/sql_lex.cc:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged
sql/sql_udf.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged
storage/heap/Makefile.am:
  Auto merged
storage/heap/hp_hash.c:
  Auto merged
storage/innobase/btr/btr0btr.c:
  Auto merged
storage/innobase/btr/btr0cur.c:
  Auto merged
storage/innobase/configure.in:
  Auto merged
storage/innobase/fil/fil0fil.c:
  Auto merged
storage/innobase/ibuf/ibuf0ibuf.c:
  Auto merged
storage/innobase/include/os0file.h:
  Auto merged
storage/innobase/include/page0cur.h:
  Auto merged
storage/innobase/include/row0mysql.h:
  Auto merged
storage/innobase/include/srv0srv.h:
  Auto merged
storage/innobase/include/trx0trx.h:
  Auto merged
storage/innobase/include/trx0trx.ic:
  Auto merged
storage/innobase/lock/lock0lock.c:
  Auto merged
storage/innobase/log/log0recv.c:
  Auto merged
storage/innobase/os/os0file.c:
  Auto merged
storage/innobase/page/page0cur.c:
  Auto merged
storage/innobase/page/page0page.c:
  Auto merged
storage/innobase/rem/rem0rec.c:
  Auto merged
storage/innobase/row/row0mysql.c:
  Auto merged
storage/innobase/row/row0sel.c:
  Auto merged
storage/innobase/row/row0upd.c:
  Auto merged
storage/innobase/srv/srv0srv.c:
  Auto merged
storage/innobase/trx/trx0trx.c:
  Auto merged
storage/innobase/trx/trx0undo.c:
  Auto merged
storage/myisam/Makefile.am:
  Auto merged
storage/myisam/mi_create.c:
  Auto merged
storage/myisam/mi_open.c:
  Auto merged
storage/myisam/mi_packrec.c:
  Auto merged
storage/myisam/mi_unique.c:
  Auto merged
storage/myisam/myisampack.c:
  Auto merged
storage/myisammrg/Makefile.am:
  Auto merged
storage/ndb/include/mgmcommon/ConfigRetriever.hpp:
  Auto merged
storage/ndb/include/transporter/TransporterDefinitions.hpp:
  Auto merged
storage/ndb/src/common/mgmcommon/ConfigRetriever.cpp:
  Auto merged
storage/ndb/src/kernel/blocks/dbtc/DbtcMain.cpp:
  Auto merged
storage/ndb/src/mgmsrv/main.cpp:
  Auto merged
storage/ndb/src/ndbapi/NdbDictionaryImpl.cpp:
  Auto merged
storage/ndb/test/ndbapi/create_tab.cpp:
  Auto merged
storage/ndb/test/ndbapi/testBlobs.cpp:
  Auto merged
strings/ctype-big5.c:
  Auto merged
strings/ctype-ucs2.c:
  Auto merged
support-files/mysql.spec.sh:
  Auto merged
configure.in:
  merge
mysql-test/t/disabled.def:
  merge
mysys/my_bitmap.c:
  SCCS merged
sql/ha_federated.cc:
  merge
sql/ha_innodb.cc:
  merge
sql/ha_ndbcluster.cc:
  merge
sql/mysqld.cc:
  e
  merge
sql/sql_insert.cc:
  merge
sql/sql_lex.h:
  merge
sql/sql_load.cc:
  merge
sql/sql_select.cc:
  merge
  e
  C
sql/sql_update.cc:
  merge
sql/table.cc:
  merge

sql/sql_class.h

@@ -654,6 +654,14 @@ typedef struct system_status_var
 void free_tmp_table(THD *thd, TABLE *entry);
 
 
+/* The following macro is to make init of Query_arena simpler */
+#ifndef DBUG_OFF
+#define INIT_ARENA_DBUG_INFO is_backup_arena= 0
+#else 
+#define INIT_ARENA_DBUG_INFO  
+#endif
+
+
 class Query_arena
 {
 public:
@@ -664,7 +672,7 @@ public:
   Item *free_list;
   MEM_ROOT *mem_root;                   // Pointer to current memroot
 #ifndef DBUG_OFF
-  bool backup_arena;
+  bool is_backup_arena; /* True if this arena is used for backup. */
 #endif
   enum enum_state
   {
@@ -682,12 +690,13 @@ public:
 
   Query_arena(MEM_ROOT *mem_root_arg, enum enum_state state_arg) :
     free_list(0), mem_root(mem_root_arg), state(state_arg)
-  {}
+  { INIT_ARENA_DBUG_INFO; }
   /*
     This constructor is used only when Query_arena is created as
     backup storage for another instance of Query_arena.
   */
-  Query_arena() {};
+  Query_arena() { INIT_ARENA_DBUG_INFO; }
+
   virtual Type type() const;
   virtual ~Query_arena() {};
 
@@ -727,6 +736,8 @@ public:
   void set_n_backup_item_arena(Query_arena *set, Query_arena *backup);
   void restore_backup_item_arena(Query_arena *set, Query_arena *backup);
   void set_item_arena(Query_arena *set);
+
+  void free_items();
 };
 
 
@@ -1428,10 +1439,10 @@ public:
 };
 
 #define tmp_disable_binlog(A)       \
-  ulong save_options= (A)->options; \
-  (A)->options&= ~OPTION_BIN_LOG;
+  {ulong tmp_disable_binlog__save_options= (A)->options; \
+  (A)->options&= ~OPTION_BIN_LOG
 
-#define reenable_binlog(A)          (A)->options= save_options;
+#define reenable_binlog(A)   (A)->options= tmp_disable_binlog__save_options;}
 
 /* Flags for the THD::system_thread (bitmap) variable */
 #define SYSTEM_THREAD_DELAYED_INSERT 1