add support for loading multipolygons from OGR sources (shapefile, etc)
add support for loading multipolygons from OGR sources (shapefile, etc)

kaiCu/mapproxy,mapproxy/mapproxy,vrsource/mapproxy,procrastinatio/mapproxy,camptocamp/mapproxy,olt/mapproxy,faegi/mapproxy,drnextgis/mapproxy,camptocamp/mapproxy,Anderson0026/mapproxy,Anderson0026/mapproxy,geoadmin/mapproxy,drnextgis/mapproxy,kaiCu/mapproxy,faegi/mapproxy,mapproxy/mapproxy,procrastinatio/mapproxy,vrsource/mapproxy,olt/mapproxy,geoadmin/mapproxy