Merge 4.1 to 5.0.

BitKeeper/etc/logging_ok:
  auto-union
client/mysql.cc:
  Auto merged
configure.in:
  Auto merged
client/mysqltest.c:
  Auto merged
include/my_global.h:
  Auto merged
include/my_pthread.h:
  Auto merged
include/mysql_com.h:
  Auto merged
libmysql/libmysql.c:
  Auto merged
libmysqld/lib_sql.cc:
  Auto merged
myisam/mi_check.c:
  Auto merged
mysql-test/r/insert.result:
  Auto merged
mysql-test/r/join_outer.result:
  Auto merged
mysql-test/r/multi_update.result:
  Auto merged
mysql-test/r/query_cache.result:
  Auto merged
mysql-test/r/symlink.result:
  Auto merged
mysql-test/t/func_time.test:
  Auto merged
mysql-test/t/insert.test:
  Auto merged
mysql-test/t/multi_update.test:
  Auto merged
mysql-test/t/query_cache.test:
  Auto merged
sql/ha_innodb.cc:
  Auto merged
sql/item.cc:
  Auto merged
sql/item.h:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/item_func.h:
  Auto merged
sql/item_subselect.cc:
  Auto merged
sql/item_sum.cc:
  Auto merged
sql/item_sum.h:
  Auto merged
sql/item_timefunc.cc:
  Auto merged
sql/lex.h:
  Auto merged
sql/log.cc:
  Auto merged
sql/log_event.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/opt_range.cc:
  Auto merged
sql/records.cc:
  Auto merged
sql/repl_failsafe.cc:
  Auto merged
sql/set_var.cc:
  Auto merged
sql/slave.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_db.cc:
  Auto merged
sql/sql_delete.cc:
  Auto merged
sql/sql_insert.cc:
  Auto merged
sql/sql_load.cc:
  Auto merged
sql/sql_prepare.cc:
  Auto merged
sql/sql_rename.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_show.cc:
  Auto merged
sql/sql_update.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged
sql/table.h:
  Auto merged
sql/share/czech/errmsg.txt:
  Auto merged
sql/share/romanian/errmsg.txt:
  Auto merged

sql/sql_rename.cc

@@ -81,6 +81,7 @@ bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list)
   {
     if (mysql_bin_log.is_open())
     {
+      thd->clear_error();
       Query_log_event qinfo(thd, thd->query, thd->query_length, 0);
       mysql_bin_log.write(&qinfo);
     }