Patch libffi to fix bug 528129 and bug 538216.

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 = $(TEXI2DVI) --pdf --batch
diff --git a/js/ctypes/libffi/configure b/js/ctypes/libffi/configure
--- a/js/ctypes/libffi/configure
+++ b/js/ctypes/libffi/configure
@@ -9016,17 +9016,17 @@ if test -z "$aix_libpath"; then aix_libp
       # Tell ltmain to make .dll files, not .so files.
       shrext_cmds=".dll"
       # FIXME: Setting linknames here is a bad hack.
       archive_cmds='$CC -o $lib $libobjs $compiler_flags `$ECHO "X$deplibs" | $Xsed -e '\''s/ -lc$//'\''` -link -dll~linknames='
       # The linker will automatically build a .lib file if we build a DLL.
       old_archive_from_new_cmds='true'
       # FIXME: Should let the user specify the lib program.
       old_archive_cmds='lib -OUT:$oldlib$oldobjs$old_deplibs'
-      fix_srcfile_path='`cygpath -w "$srcfile"`'
+      fix_srcfile_path=''
       enable_shared_with_static_runtimes=yes
       ;;
 
     darwin* | rhapsody*)
 
 
   archive_cmds_need_lc=no
   hardcode_direct=no