* [LOGGING,WEB_MESSAGE,SC] The situation is no longer included in the logged rows. It is already present in the folder structure in which the log files are stored.
* [OAEI,SC] Extracted code generic enough for the new module ORDSET_EXT and specific enough for the IOTW project module IOTW.
* [ORDSET_EXT,NEW] New module, currently containing a generic pairs to sets converter, extracted from module OAEI.
I started using module VOID again, some cleanup there...

* [META_EXT,SC] Removed mapsum/3, use the SWI-Prolog library aggregate instead.
* [RDF_SERIAL,NEW] Added file_to_graph_name/2 for basing a new graph name of a given file name. Also used by rdf_load2/2 when there is no graph/1 option.
* [RDF_SERIAL,FIX] file_or_rdf_graph/2 returned an instantiated option, but this is not possible.
* [RDF_SERIAL,FIX] rdf_guess_data_format/2 comitted to instantiations too early.
* [RDF_STATISTICS,SC] Cleanup operation: removing unused predicates, renaming variables, documenting predicate headers, rewriting the counting of RDFS classes and RDF properties.
* [VOID,EXT] Added argument to void_load_library/3, providing more control over the name of the graph in which the VoID data is loaded.
* [VOID,SC] Rewrote void_load_library/3 to use newest APIs; added debug info/documentation.
* [THREAD_EXT,DEB] Added methods for printing the current threads to the terminal.
* [THREAD_EXT,FIX] Added a message to the Web overview of threads in case there are no threads.
* [VOID,DEB] Added several debug statements.