Bug 170668 [DataBinding] [Patch] Add SWTObservables.observeTooltipText()
Adds support for binding to SWT Control TooltipText property.
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/internal/databinding/internal/swt/SWTProperties.java
* Applies to
	 */
	public static final String ITEMS = "items"; 
	/**
	 * Applies to Spinner
	 */
	public static final String MAX = "max"; 
	/**
	 * Applies to Spinner
	 */
	public static final String MIN = "min"; 
	/**
	 * Applies to Spinner, Button
	 */
	public static final String SELECTION = "selection"; 
	/**
	 * Applies to Spinner, Button
	 */
	public static final String SELECTION_INDEX = "index"; 
	/**
	 * Applies to Text, Label, Combo
	 */
	public static final String TEXT = "text"; 
	
	/**
	 * Applies to Label, CLabel.
	 */
	public static final String IMAGE = "image"; 
}