Changes in release 3.19.5
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* Some new functions, some more optimization on joins.
* Should now compile clean on Linux (2.0.x).
* Added functions `DATABASE()', `USER()', `POW()', `LOG10()' (needed
for ODBC).
* In a `WHERE' with an `ORDER BY' on fields from only one table, the
table is now preferred as first table in a multi-join.
* `HAVING' and `IS NULL' or `IS NOT NULL' now works.
* A group on one column and a sort on a group function (`SUM()',
`AVG()'...) didn't work together. Fixed.
* `mysqldump': Didn't send password to server.