* [RDF_SERIAL,FIX] Checking whether an RDF file needs to be saved or not, now requires that the file exists.
* [RDF_SERIAL,FIX] Graphs can now be saved to files whose directory does not yet exist.
* [RDF_SERIAL,FIX] Check whether the file that RDF was loaded from has changed since loading.
* [RDF_BNODE_WRITE,SC] Changed module and predicate names due to a conflict with ClioPatria.