Perform the fill patch only for numpy<1.9.0.
Perform the fill patch only for numpy<1.9.0.

Closes #380.

brendan-ward/rasterio,perrygeo/rasterio,clembou/rasterio,clembou/rasterio,clembou/rasterio,brendan-ward/rasterio,njwilson23/rasterio,perrygeo/rasterio,njwilson23/rasterio,kapadia/rasterio,brendan-ward/rasterio,njwilson23/rasterio,kapadia/rasterio,youngpm/rasterio,youngpm/rasterio,youngpm/rasterio,kapadia/rasterio,perrygeo/rasterio