sync with experimental

manual/luatex-languages.tex

manual/luatex-nodes.tex

manual/luatex-tex.tex

manual/luatex.pdf

manual/luatex.tex

source/texk/web2c/luatexdir/font/luafont.w

source/texk/web2c/luatexdir/lang/hyphen.w

source/texk/web2c/luatexdir/lang/texlang.h

source/texk/web2c/luatexdir/lang/texlang.w

source/texk/web2c/luatexdir/lua/liolibext.c

source/texk/web2c/luatexdir/lua/lnodelib.c

source/texk/web2c/luatexdir/lua/luanode.w

source/texk/web2c/luatexdir/luatex.c

source/texk/web2c/luatexdir/tex/commands.w

source/texk/web2c/luatexdir/tex/dumpdata.w

source/texk/web2c/luatexdir/tex/equivalents.h

source/texk/web2c/luatexdir/tex/maincontrol.w

source/texk/web2c/luatexdir/tex/texfileio.w

source/texk/web2c/luatexdir/tex/texnodes.h

source/texk/web2c/luatexdir/tex/texnodes.w