A (buffer, channel) pair similar to ChannelDataInput, but for write operations (contribution by Rémi Maréchal).
This will be needed for adding write capability to our data stores (Shapefile, NetCDF, GeoTIFF, etc.).


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK8@1589456 13f79535-47bb-0310-9956-ffa450edef68