Because gmmproc does not generate Glib::Value<>::value_type() stuff right,
I have hand-coded them (it wasn't hard).  Here is an example of what
gmmproc generates without the NO_GTYPE keyword at the end of the
_WRAP_ENUM() macro:

In the .h file (this is correct):
#ifndef DOXYGEN_SHOULD_SKIP_THIS
namespace Glib
{

template <>
class Value<Gnome::Vfs::FileInfoOptions> : public
Glib::Value_Flags<Gnome::Vfs::FileInfoOptions>
{
public:
  static GType value_type() G_GNUC_CONST;
};

} // namespace Glib
#endif /* DOXYGEN_SHOULD_SKIP_THIS */


in the .cc file (this is not correct):
// static
GType Glib::Value<Gnome::Vfs::FileInfoOptions>::value_type()
{
  return gnome_vf_sfile_info_options_get_type();
}

this is because of the _GET_TYPE_FUNC() m4 macro that is defined in base.m4
 (line 124) of gmmproc.  Maybe we can override that in vfsmm, but I'm not
sure.  Anyway, here's the patch with the hand-coded Glib::Value<> stuff.