7d71f8888d
Add window-minimize, window-maximize, window-restore and window-delete icons to the builtin icon theme. These will be used for icons in the window buttons, and the expectation is that the icon theme will provide icons matching the desired decoration style. window-delete is used instead of window-close, since window-close is also used for GTK_STOCK_CLOSE, and the two may require different styles when used inside the application vs in the window frame.