Fix distribution, .c files instead of .cpp files.
Fix distribution, .c files instead of .cpp files.

perrygeo/rasterio,kapadia/rasterio,perrygeo/rasterio,perrygeo/rasterio,clembou/rasterio,brendan-ward/rasterio,njwilson23/rasterio,snorfalorpagus/rasterio,johanvdw/rasterio,kapadia/rasterio,brendan-ward/rasterio,brendan-ward/rasterio,sgillies/rasterio,johanvdw/rasterio,youngpm/rasterio,clembou/rasterio,njwilson23/rasterio,njwilson23/rasterio,youngpm/rasterio,clembou/rasterio,kapadia/rasterio,johanvdw/rasterio,youngpm/rasterio