* doc/en/user-guide/index-plain.txt: Get rid of the U+2014 trick, I can't find where it's used anyway.
* bzrlib/doc_generate/writers/texinfo.py: (TexinfoTranslator): Forget about chunks, we just produce text anyway, the newlines are embedded when needed so the resulting text can always be joined with ''. Skip nodes that are not yet implemented. (TexinfoTranslator.depart_tgroup): Not all tables define column titles, needs investigation. (TexinfoTranslator.depart_reference): Mark as incomplete.