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.