Started loading all module in debug mode in order to have access to all documentation via plDoc. Doing this triggered a LOT of small failures, so many fixes overall.

* [ASCII,SC] Renamed graph/3 into ascii_graph/3 to avoid naming conflicts with graph theory modules.
* [AUDIO_EXT,FIX] Replaced deprecated predicate used from ATOM_EXT.
* [COWSPEAK,FIX] Single quote was not escaped, resulting in a failure upon loading the file (endless string).
* [DEB,DOC] Load all modules in debug mode. This allows failures to be tracked down faster, and it allows all code to be inspected from within the plDoc server.
* [DEB,DOC,FIX] Fixed the HTTP location of plDoc so that it no longer conflicts with the main serve (i.e., Wallace).
* [DGRAPH,UGRAPH_EXT,SC] Renamed DGRAPHS to DGRAPH and UGRAPS_EXT to UGRAP_EXT.
* [DGRAPH,UGRAPH_EXT,SC] Disambiguated public predicate names of modules DGRAPH and UGRAPH_EXT.
* [GRAPH_WEB,FIX] Added missing module import.
* [GRAPHS_TRAV,FIX] Added missing module import.
* [ISO,SC] Renamed the public ISO predicates to avoid predicate name collisions.
* [RDF_ENTAILS,FIX] proof_print should be print_proof.
* [RDF_META_AUTO_EXPAND,DOC] Fixed invalid plDoc.
* [RFC_1630,NEW] New module documenting RFC 1630 describing URIs.
* [RFC_1736,NEW] New module documenting RFC 1736 describing the minimal requirements for resource locators.
* [RFC_2396,NEW] New module documenting RFC 2396 on URIs.
* [SVG,NEW] Added circle/6 and line/7.
* [UGRAPHS_EXT_WEB,FIX] Now uses new SVg predicate for creating circle and line elements (these predicates were removed some time ago), see SVG.
* [XFN,FIX] Added missing XML namespace registration.
Some extensions to cowspeak and atom_ext.

* [ATOM_EXT,DOC] Cleaned up some documentation.
* [ATOM_EXT,SC] Removed term_atom/2, replaced by term_to_atom/2 swipl builtin.
* [ATOM_EXT,NEW] Added atom and codes splitting based on a given maximum length.
* [COWSPEAK,EXT] Long lines are now wrapped (per character) to fit inside the speech buble.
* [COWSPEAK,EXT] Allow atomic list input for speech/1.
* [COWSPEAK,NEW] Added wrapper predicate cowsay/1.