Autodetect if a system's gobject introspection and pygobject libraries are recent enough
@jeff
Submitted by Jeff F.T. Assigned to Thibault Saunier @thiblahute
Description
If both gobject-introspection and pygobject are recent enough, $MODULES_CORE="". Otherwise, $MODULES_CORE="glib gobject-introspection pygobject". If just not sure of how the logic should go for that one.
Also, we have to take care of bug T2990 for this to work properly.
Imported from https://bugzilla.gnome.org/show_bug.cgi?id=686342