D.3.3 Modifications de la version 3.21.31

• Fixed a sign extension problem for the TINYINT type on Irix.
• Fixed problem with LEFT("constant_string",function).
• Fixed problem with FIND_IN_SET().
• LEFT JOIN core dumped if the second table is used with a constant WHERE/ON expression that uniquely identifies one record.
• Fixed problems with DATE_FORMAT() and incorrect dates. DATE_FORMAT() now ignores '%' to make it possible to extend it more easily in the future.