Re-add patches I wrote in October 2018:

    glib2's gobject subsystem is essentially a wrapper for dlopen. In
    view of comments in PR lib/49791 which can be summarised as
    "RTLD_GLOBAL is a bug", make gobject use RTLD_DEFAULT instead.

This should fix PR pkg/56212

The upstream merge request

    https://gitlab.gnome.org/GNOME/glib/-/merge_requests/2171

has been updated - feel free to add a description of the problems you
experienced without this patch to it.

(prlw1)