Bug 85774 [Presentations] bad tooltips in r21 presentation on Linux
The tooltips for the view menu and close buttons contain the "&" character on GTK.
bundles/org.eclipse.ui.presentations.r21/src/org/eclipse/ui/internal/presentations/R21BasicStackPresentation.java
private IPropertyListener childPropertyChangeListener = new IPropertyListener() {
        public void propertyChanged(Object source, int property) {
            if (source instanceof IPresentablePart) {
                IPresentablePart part = (IPresentablePart) source;
                childPropertyChanged(part, property);
            }
        }
    };
    private DisposeListener tabDisposeListener = new DisposeListener() {
        public void widgetDisposed(DisposeEvent e) {
            if (e.widget instanceof CTabItem) {
                CTabItem item = (CTabItem) e.widget;
                IPresentablePart part = getPartForTab(item);
                part.removePropertyListener(childPropertyChangeListener);
            }
        }
    };
    
    private ShellAdapter shellListener = new ShellAdapter() {
        public void shellActivated(ShellEvent event) {
            shellActive = true;
            updateGradient();
        }
        public void shellDeactivated(ShellEvent event) {
            shellActive = false;
            updateGradient();
        }
    };
    private ToolBar viewToolBar;
    private ToolItem pullDownButton;