Merge bk-internal.mysql.com:/home/bk/mysql-5.0

into mysql.com:/home/dlenev/src/mysql-5.0-bg10015


sql/handler.cc:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged

sql/sql_class.h

@@ -1062,6 +1062,8 @@ public:
     THD_TRANS all;			// Trans since BEGIN WORK
     THD_TRANS stmt;			// Trans for current statement
     bool on;                            // see ha_enable_transaction()
+    /* TRUE if we are inside of trigger or stored function. */
+    bool in_sub_stmt;
     XID  xid;                           // transaction identifier
     enum xa_states xa_state;            // used by external XA only
     /*