Changes in release 3.22.16
--------------------------
* `mysqladmin processlist' could kill the server if a new user
logged in.
* `DELETE FROM tbl_name WHERE key_column=col_name' didn't find any
matching rows. Fixed.
* `DATE_ADD(column, ...)' didn't work.
* `INSERT DELAYED' could deadlock with status 'upgrading lock'
* Extended `ENCRYPT()' to take longer salt strings than 2 characters.
* `longlong2str' is now much faster than before. For `Intel x86'
platforms, this function is written in optimized assembler.
* Added the `MODIFY' keyword to `ALTER TABLE'.