Add MultiPolygon support

include/extractor/location_dependent_data.hpp

@@ -38,7 +38,8 @@ struct LocationDependentData
     void loadLocationDependentData(const boost::filesystem::path &file_path);
 
     rtree_t rtree;
-    std::vector<std::pair<polygon_t, properties_t>> polygons;
+    std::vector<std::pair<polygon_t, std::size_t>> polygons;
+    std::vector<properties_t> properties;
 };
 }
 }

include/util/geojson_validation.hpp

@@ -76,8 +76,6 @@ inline void validateFeature(const rapidjson::Value &feature)
     const auto coord_array = feature["geometry"].GetObject()["coordinates"].GetArray();
     if (coord_array.Empty())
         throw osrm::util::exception("Feature geometry coordinates member is empty.");
-    if (!coord_array[0].GetArray()[0].IsArray())
-        throw osrm::util::exception("Feature geometry coordinates array has non-array outer ring.");
 }
 }
 }