C extension should be configured via INI

[Addvilz]

It would be nice for it to be possible to set C extension's default database path in INI file, to allow system wide configuration for the extension, as it was done for the old extension.

[komapa]

Yes, this is a big regression from the legacy GeoIP extension: http://php.net/manual/en/geoip.configuration.php#ini.geoip.custom-directory