* do not ignore Japanese (platex) with system fonts.
* CJK can be used with XeTeX and TeX-fonts if the input encoding is utf8.
do not ignore.
* TODO: set non-TeX fonts and uninvert where possible.
* some Japanese (platex) documents fail with inputenc "utf8-platex"
(missing characters in non-Japanese text parts), because the
Unicodechar definitions from "inputenc" are not used.
* some Japanes (platex) documents show wrong output with "auto",
because platex ignores the encoding switch for text parts
in other languages.
* Japanese Beamer documents must set default output to "pdf",
because dvipdfm(x) produces wrong output with document class "Beamer".
* update tagging/inverting rules.
* use HE8 font encoding for Hebrew in language test.
