Patch libffi 3.0.9 to fix bug 528129.

diff --git a/js/ctypes/libffi/Makefile.in b/js/ctypes/libffi/Makefile.in
--- a/js/ctypes/libffi/Makefile.in
+++ b/js/ctypes/libffi/Makefile.in
@@ -192,17 +192,17 @@ LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIB
 CCLD = $(CC)
 LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
 	--mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
 	$(LDFLAGS) -o $@
 SOURCES = $(libffi_la_SOURCES) $(nodist_libffi_la_SOURCES) \
 	$(libffi_convenience_la_SOURCES) \
 	$(nodist_libffi_convenience_la_SOURCES)
 DIST_SOURCES = $(libffi_la_SOURCES) $(libffi_convenience_la_SOURCES)
-INFO_DEPS = $(srcdir)/doc/libffi.info
+INFO_DEPS =
 am__TEXINFO_TEX_DIR = $(srcdir)
 DVIS = doc/libffi.dvi
 PDFS = doc/libffi.pdf
 PSS = doc/libffi.ps
 HTMLS = doc/libffi.html
 TEXINFOS = doc/libffi.texi
 TEXI2DVI = texi2dvi
 TEXI2PDF = $(TEXI2DVI) --pdf --batch