win32: add TODO mentioning GtkButton::child-displacement-x & y should be 0 when XP theme is active
win32: add TODO mentioning GtkButton::child-displacement-x & y should be 0 when XP theme is active

Distrotech/gtk,Unity-Technologies/gtk,johne53/MB3Gtk-2,Unity-Technologies/gtk,Distrotech/gtk,Distrotech/gtk,Distrotech/gtk,johne53/MB3Gtk-2,Unity-Technologies/gtk,Unity-Technologies/gtk,Distrotech/gtk,Unity-Technologies/gtk,johne53/MB3Gtk-2,johne53/MB3Gtk-2,johne53/MB3Gtk-2