Added menu tracking to the OS X backend. This is needed for uninitMenus().
Added menu tracking to the OS X backend. This is needed for uninitMenus().

tbodt/libui,ProtonMail/libui,ProtonMail/libui,ProtonMail/libui,mantyr/libui,sclukey/libui,mantyr/libui,sclukey/libui,tbodt/libui,mantyr/libui