Create each table with a SPATIAL INDEX, because when MySQL 5.7
(and MariaDB 10.2.2) introduced SPATIAL INDEX for InnoDB tables,
a table-rebuilding LOCK=NONE would be refused if the table
contains any SPATIAL INDEX. With instant ADD COLUMN, the operations
must be allowed, and must report '0 rows affected' for everything
else except ROW_FORMAT=COMPRESSED tables.

FIXME: When instant ADD COLUMN is enabled, the ALGORITHM=INPLACE
will have to be changed to LOCK=NONE.