/usr/share/doc/texlive-doc/ is in texlive-luatex 2009-15.
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/usr/share/doc/texlive-doc/lualatex/
/usr/share/doc/texlive-doc/lualatex/luainputenc/
/usr/share/doc/texlive-doc/lualatex/luainputenc/README
/usr/share/doc/texlive-doc/lualatex/luainputenc/inputenc.sty.diff
/usr/share/doc/texlive-doc/lualatex/luainputenc/luainputenc.pdf
/usr/share/doc/texlive-doc/luatex/
/usr/share/doc/texlive-doc/luatex/luamplib/
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/usr/share/doc/texlive-doc/luatex/luaotfload/
/usr/share/doc/texlive-doc/luatex/luaotfload/README
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/usr/share/doc/texlive-doc/luatex/luatextra/
/usr/share/doc/texlive-doc/luatex/luatextra/README
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/usr/share/doc/texlive-doc/luatex/luatextra/luatextra-reference.pdf
/usr/share/doc/texlive-doc/luatex/luatextra/luatextra.pdf