/usr/lib/tntdb/tntdb4-mysql.so is in tntdb-mysql4v5 1.3-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/tntdb/tntdb4-mysql.so.4.0.0
/usr/lib/tntdb/tntdb4-mysql.so.4.0.0