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 ViewForm viewForm;
	
	private ProxyControl contentProxy;	
	private ProxyControl viewFormTopLeftProxy;
	private ProxyControl viewFormTopRightProxy;
	private ProxyControl viewFormTopCenterProxy;
	
	
	private SizeCache topRightCache = new SizeCache();
	private SizeCache topCenterCache = new SizeCache();
	private SizeCache topLeftCache = new SizeCache();
	
	private int tabPosition;
	private boolean putTrimOnTop = false;
		
	/**
	 * List of PaneFolderButtonListener
	 */
	private List buttonListeners = new ArrayList(1);
	private int state = IStackPresentationSite.STATE_RESTORED;
	
	/**
	 * State of the folder at the last mousedown event. This is used to prevent
	 * a mouseup over the minimize or maximize buttons from undoing a state change 
	 * that was caused by the mousedown.
	 */
	private int mousedownState = -1;