add API for chaining: g_signal_chain_from_overridden() and

add API for chaining: g_signal_chain_from_overridden() and

Tue Nov 13 23:18:10 2001  Tim Janik  <timj@gtk.org>

        * gsignal.[hc]: add API for chaining:
        g_signal_chain_from_overridden() and g_signal_override_class_closure(),
        implementation yet to come.

        * gtype.[hc], Makefile.am: provide G_LOG_DOMAIN as compile flag.

        * gparam.[hc]: s/g_param_get/g_param_spec_get/ for get_nick,
        get_name and get_blurb, to be consistent with the rest of the
        g_param_spec_*() functions.

        * gparamspecs.[hc]: got rid of bogus GClosure paramspec.
        G_TYPE_CLOSURE is a boxed type already.