[debian-mysql] Bug#917793: Bug#917793: Bug#917793: Automatically update MariaDB plugin paths libmariadb18 -> libmariadb19 on upgrade from MariaDB 10.1 to MariaDB 10.3

[Otto Kekäläinen]

Looking at current table contents looks like there are no paths or
soname versions stored at all:

MariaDB [mysql]> select * from plugin;
+------------------+----------------+
| name             | dl             |
+------------------+----------------+
| auth_socket      | auth_socket.so |
| mroonga          | ha_mroonga.so  |
| spider           | ha_spider.so   |
| spider_alloc_mem | ha_spider.so   |
+------------------+----------------+