fixup! version up : libffi 3.1.

component/glib/buildout.cfg

@@ -22,7 +22,7 @@ environment =
   PATH=${gettext:location}/bin:${perl:location}/bin:${xz-utils:location}/bin:%(PATH)s
   CPPFLAGS=-I${gettext:location}/include -I${zlib:location}/include
   LDFLAGS=-L${gettext:location}/lib -Wl,-rpath=${gettext:location}/lib -L${zlib:location}/lib -Wl,-rpath=${zlib:location}/lib
-  LIBFFI_CFLAGS=-I${libffi:location}/lib/libffi-${libffi:version}/include
+  LIBFFI_CFLAGS=-I${libffi:location}/include
   LIBFFI_LIBS= -L${libffi:location}/lib -Wl,-rpath=${libffi:location}/lib -lffi
 
 [x86-cygwin-glib]