Make schema to be a schema in catalog functions in parameters and results

Historically, Connector/ODBC sees MariaDB/MySQL databases as "catalogs". This means that to get results from catalog functions user has to use catalog pair of input parameters, and look for database name in the "catalog" columns of the resultset, for which connector used "schema" fields from corresponding infromation_schema table.
This is at least strange.
Changing such behavior can be painful for users, thus it has to be introduced as optional, and become default from new (major?) version.