Support of MariaDB/MySQL cross-database connection from Perl db drivers

The MariaDB database is a fork of MySQL. Over time, these services developed independently and are no longer fully compatible. These differences also affect the Perl database drivers. Consequently, if you use the DBD::mysql driver in a Perl application to connect to a MariaDB database, or the DBD::MariaDB driver to connect to a MySQL database, operations can lead to u...