added floating reference count. g_object_is_floating():

added floating reference count. g_object_is_floating():

Wed Nov 23 18:01:46 2005  Tim Janik  <timj@imendio.com>

        * gobject.[hc]: added floating reference count.
        g_object_is_floating():
        g_object_ref_sink(): new functions to deal with floating references.
        g_object_force_floating(): new funciton for object implementations
        to set the floating flag.

        * gobject.c (g_object_init): make objects initially floating.

Wed Nov 23 17:58:13 2005  Tim Janik  <timj@gtk.org>

        * gparam.[hc]: added g_param_spec_ref_sink().