[O] [solution] Chinese characters in Beamer export

[James Harkins]

FWIW, this is what it took for me to get Chinese characters to export
in beamer. (Adding a TODO to write this up for worg.)

1. Use texlive 2012. (The Ubuntu packages for 12.04 date back to 2009.
I couldn't get them to work for this.)

2. In the preamble of your org document:

#+LaTeX_HEADER: \usepackage{CJKutf8}

#+BEGIN_LaTeX
\AtBeginDocument{%
\begin{CJK}{UTF8}{gbsn}}
\AtEndDocument{%
\end{CJK}}
#+END_LaTeX

These LaTeX snippets come from the documentation of the CJK package.
"gbsn" is for simplified Chinese characters (used on the mainland).
Other options for Chinese may be found at:

http://en.wikibooks.org/wiki/LaTeX/Internationalization#Chinese

That pretty much did it (although it took quite a bit of sleuthing to
find this, thanks to a fair amount of out of date information that
will never, ever die in the big search engines).

Except for one problem. LaTeX inputenc will complain about the Chinese
characters being "not set up for use with LaTeX," but the document
does render. I'll have to leave that question aside for the moment,
but this isn't the last time I'll need Chinese characters in a
presentation so I'll come back to that before posting anything on
worg. (Or, maybe a sophisticated LaTeX user knows what is wrong?)

hjh