Bug 65444 [R21PRES] Close button shown when views not closeable
RC1 build - run the browser example using the R2.1 presentation - the views have close buttons in the titlebar, but should not because the perspective has fixed="true" (meaning that all initial views are non-moveable and non-closeable)
bundles/org.eclipse.ui.presentations.r21/src/org/eclipse/ui/internal/presentations/r21/widgets/R21PaneFolder.java
private MouseListener mouseListener = new MouseAdapter() {
		public void mouseDown(MouseEvent e) {
			mousedownState = getState();
		}
		
		public void mouseDoubleClick(MouseEvent e) {
		}		
	};
	
	/**
	 * Creates a pane folder. This will create exactly one child control in the
	 * given parent.
	 * 
	 * @param parent
	 * @param flags
	 */
	public R21PaneFolder(Composite parent, int flags) {
		
		{
			tabFolder = new CTabFolder(parent, flags);
			
			
			
			tabFolder.addMouseListener(mouseListener);
		}