Fixed bug in CONCAT_WS()
Print the default ISOLATION level.
Change lock type for CREATE ... SELECT and INSERT/REPLACE ... SELECT


Docs/manual.texi:
  Changelog
mysql-test/r/func_str.result:
  Added tests for CONCAT_WS()
mysql-test/r/update.result:
  Test case for bug when updating on key
mysql-test/t/func_str.test:
  Added tests for CONCAT_WS()
mysql-test/t/update.test:
  Test case for bug when updating on key
sql/gen_lex_hash.cc:
  Better hash values
sql/handler.cc:
  Added missig NullS
sql/item_strfunc.cc:
  Fixed bug in CONCAT_WS()
sql/mysql_priv.h:
  Print the default ISOLATION level.
sql/mysqld.cc:
  Print the default ISOLATION level.
sql/sql_insert.cc:
  Remove unnecessary call to setup_tables()
sql/sql_parse.cc:
  Change lock type for CREATE ... SELECT and INSERT/REPLACE ... SELECT
sql/sql_yacc.yy:
  Change lock type for CREATE ... SELECT and INSERT/REPLACE ... SELECT
BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted