Integration with Smart IP module

by default, the cordinates are 0,0.

adding simple support to smart_ip, we can use user default location.

in geofield_handler_field.inc, change

  function option_definition() {
    $options = parent::option_definition();
    $options['dist_lat'] = array('default' => 0);
    $options['dist_lon'] = array('default' => 0);
    return $options;
  }

to

     if (isset($user->data['geoip_location']['latitude']) && isset($user->data['geoip_location']['longitude'])) {
	$options['dist_lat'] = array('default' => $user->data['geoip_location']['latitude']);
	$options['dist_lon'] = array('default' => $user->data['geoip_location']['longitude']);
    } else {
    $options['dist_lat'] = array('default' => 0);
    $options['dist_lon'] = array('default' => 0);
    return $options;
	}