test/zh/warichu-test: an example in LaTeX

test/zh/warichu-test: an example in LaTeX

Note that the last update of ltj-warichu.sty is 2012-04-06,
and the commit message of it says
>  It is a simple package of warichu that should modified in the future.
>  The code is brrowed from the website: http://code.google.com/p/xeguji/ .

warichu-test_ltx.tex should be typeset without an error, but the result is
unsatisfactory. Perhaps reconstitution from scratch is a better option.