Added protocol::flush() for easier embedded-server code
Increase block allocation variables a bit as they where a bit too small for MySQL 4.1
Added option --silent to client_test
* When executing EXPLAIN, do the same as for the query: convert join type to JT_CONST if keyuse array covers all key parts and all of them are constants.
* In remove_const, don't remove conditions that depend on some-const-table and current-table.
it happens because of the LEFT JOINT optimization in add_key_part()
This optimization does exactly the same in JOIN and in WHERE conditions
Not right.
I moved that optimization one level upper.
Added missing InnoDB variables to SHOW VARIABLES.
Fixed bug when doing WHERE 'column_name=NULL' on an indexed column that had NULL values.
Fixed bug when doing 'LEFT JOIN ... ON (column_name = constant) WHERE column_name = constant'