sync with experimental

manual/luatex-lua.tex

manual/luatex-math.tex

manual/luatex-modifications.tex

manual/luatex-tex.tex

manual/luatex.pdf

source/texk/web2c/lib/ChangeLog

source/texk/web2c/lib/printversion.c

source/texk/web2c/luatexdir/ChangeLog

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

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

source/texk/web2c/luatexdir/lua/luatex-api.h

...eb2c/luatexdir/luafontloader/fontforge/fontforge/psread.c

...texdir/luafontloader/fontforge/fontforge/splinerefigure.c

source/texk/web2c/luatexdir/luatex_svnversion.h

source/texk/web2c/luatexdir/pdf/pdfgen.c

source/texk/web2c/luatexdir/pdf/pdflink.c

source/texk/web2c/luatexdir/pdf/pdflink.h

source/texk/web2c/luatexdir/pdf/pdflistout.c

source/texk/web2c/luatexdir/pdf/pdftables.c

source/texk/web2c/luatexdir/pdf/pdftypes.h