strip boost::optional from non-optional marker ptr
strip boost::optional from non-optional marker ptr

mapnik/mapnik,lightmare/mapnik,naturalatlas/mapnik,naturalatlas/mapnik,tomhughes/mapnik,naturalatlas/mapnik,mapnik/mapnik,mapnik/mapnik,naturalatlas/mapnik,tomhughes/mapnik,lightmare/mapnik,tomhughes/mapnik,lightmare/mapnik,tomhughes/mapnik,mapnik/mapnik,lightmare/mapnik