Fix seams of mesh faces when warping transparent raster
Fix seams of mesh faces when warping transparent raster

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