Allow empty arguments to mysqld to make it easier to start from shell scripts.
Setting a TIMESTAMP column to NULL didn't record the timestamp value in the update log.
Fixed lock handler bug when one did INSERT INTO TABLE ... SELECT ... GROUP BY.
Added a patch for localtime_r() on Windows so that it will no lonher crash if your date is > 2039, but instead will return a time of all zero.
Names for user-defined functions are no longer case-sensitive.
Added escape of ^Z (ASCII 26) to \Z as ^Z doesn't work with pipes on Windows.
mysql_fix_privileges adds a new column to the mysql.func to support aggregate UDF functions in future MySQL releases.