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 | +------------------+----------------+
