Bug 67513 [R21PRES] view tab tool tip inconsistent with 2.1
In 2.1, the tab item tool tip appeared in the stack's title bar, not on the tab item itself. The r21presentation currently puts the tip on the tab item. I'll attach a patch that fixes the problem.
bundles/org.eclipse.ui.presentations.r21/src/org/eclipse/ui/internal/presentations/R21BasicStackPresentation.java
* @param vertical
	 */
	public void drawGradient(Color fgColor, Color[] bgColors,
			int[] percentages, boolean vertical) {
		
		
		if (titleLabel == null || viewToolBar == null)
			return;
		titleLabel.setBackground(bgColors, percentages, vertical);
		titleLabel.setForeground(fgColor);
		titleLabel.update();
	}
	public boolean isActive() {
		return activeState;
	}
	/**
	 * Set the size of a page in the folder.
	 * 
	 * TODO: Kim here...I had to make this public so that the when the font was
	 * updated via the color scheme service it could relayout the
	 * presentation... calling control.getLayout() doesn't do the trick.
	 */
	public void setControlSize() {
		
		
		if (current != null) {
			paneFolder.setTopLeft(titleLabel);
			titleLabel.setText(current.getTitle());
			titleLabel.setImage(current.getTitleImage());
			titleLabel.setVisible(true);