Fix LoTW integration again.

If the MySQL library isn't explicitly initialized, the mysql library will
end up calling EVP_cleanup() while detecting the MySQL version, which
clobbers the OpenSSL context, preventing LoTW (and perhaps ClubLog)
integration from working properly.

Look in ${LOCALBASE}/lib/mysql/ for MySQL and MariaDB libraries.
Only look for .so file, don't look for "any" SONAME.