NOTE: this will be merged into the future Graph refactoring. Resolve or-dependencies taking advantage of package matches requested by caller, when available. For example: if user is requesting xfce4-panel and nm-applet, and the former has an or dependency like this: "gnome-panel;xfce4-panel?" or (using the new format) "( gnome-panel | xfce4-panel )", prefer xfce4-panel over gnome-panel.