Synch changes from Turtle/N-Triples/N-Quads

[domel]

• Use style for table cell text alignment rather than inline-css and change how whitespace is introduced between --.
• Add SHOULD criteria on IRIREF for RFC3986 section 3.3.
• Change RDF12-CONCEPTS#dfn-literal to RDF12-CONCEPTS#dfn-rdf-literal, which is the correct term to reference.
• Changes to synchronize with N-Triples.
• Add link to supporting tests for normative C14N UCHAR language.
• Add language to require that only valid IRIs, language tags, and base directions be used to form triples, otherwise signaling an error. Fixes Update common files. rdf-n-quads#37.
• Narrow IRI validity requirements
• Suggestions from @afs on weakening language on parser behavior in the presence of ill-formed terms.
• Add note on processors producing errors and the potential affect on the result.
• Fix dfn-literal. add "period" before full-stop character, other misc.
• RFC3986 conformance.
• Style updates from Turtle.
• Add test links for negative syntax IRI and LANG_DiR tests.

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Preview | Diff

[gkellogg]

Thanks for taking this on. I can't note everything through inline comments:

Table styling changed, and probably the class needs to be updated in the two Escape Sequences tables, as compared with w3c/rdf-turtle#107.

The Term Constuctors table for PNAME_NS and PNAME_LN should have the same IRI provisions as IRIREF.

The LANG_DIR constructor needs the statement about being well-formed.

The Diff view for w3c/rdf-turtle#107 shows where parallel changes are needed, at least those that are visible in the render.

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