Japanese language processing patch

[yokota]

These patches updates Japanese language support.
Please apply them.

It includes:
* Newer LuaTeX support.
* Install missing file that requires Japanese language processing.
* Remove obsolete syntax in .texi document.

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YOKOTA

0001-Solve-undefined-symbols.patch
Description: Text Data

0003-Support-Lua-5.3-number-syntax.patch
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0002-Install-texinfo-ja.tex-to-work-txi-ja.tex-works-well.patch
Description: Text Data

0004-Update-LuaTeX-hack.patch
Description: Text Data

0005-Change-file-encoding-to-UTF-8.patch
Description: Text Data

0006-Update-texinfo-macro-usage.patch
Description: Text Data