Merge the Columnstore changes for MariaDB to Server version 10.2. This includes all the changes for Columnstore in the mariadb-columnstore-server directory as well as all the changes needed in the connector to use the MariaDB generated Windows Functions objects.
New functionality (Like CTE) in Server 10.2 will be stubbed out and issue a "not supported" error. These functionalities will be added by other MCOL.
There is some risk that other incompatibilities may be found and will need to be addressed.
See the document "Merging Columnstore to MariaDB Server 10.2" for more information.