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
public void setTabPosition(int newTabPosition) {
		tabPosition = newTabPosition;
		tabFolder.setTabPosition(tabPosition);
	}
	
	public int getTabPosition() {
		return tabPosition;
	}
	
	public boolean isDisposed() {
		return tabFolder == null || tabFolder.isDisposed();
	}
	
	public CTabItem createItem(int style, int index) {
		return new CTabItem(tabFolder, style, index);
	}
	
	
	
	
	public void setSelection(int selection) {
		tabFolder.setSelection(selection);
	}
	/**
	 * @param i
	 * @param j
	 * @param k
	 * @param l