Bug 190061 [Metadata] Update @since tags for new API
Patch to follow
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/ViewerLabel.java
* Return whether or not the font has been set.
	 * 
	 * @return boolean. <code>true</code> if the value has been set.
	 * 
	 * @since 3.1
	 */
	public boolean hasNewFont() {
		return font != null;
	}
	/**
	 * Get the background Color.
	 * 
	 * @return Color or <code>null</code> if no new value was set.
	 * 
	 * @since 3.1
	 */
	public Color getBackground() {
		return background;
	}
	/**
	 * Set the background Color.
	 * 
	 * @param background
	 *            Color. This value should not be <code>null</code>.
	 * 
	 * @since 3.1
	 */
	public void setBackground(Color background) {
		this.background = background;
	}