Bug 176436 Charts Imported from Libraries do not update when libraries change
During a live presentation of BIRT at EclipseCon, we came across a rather embarassing issue. When charts are included in a library, and imported into a report design from a library, any changes to the library instance of the chart do not reflect in the report itself.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DesignElementHandle.java
* Factory data structures. This handle follows specialized rules:
	 * <p>
	 * <ul>
	 * <li>Optimized to get each property value only once.</li>
	 * <li>Indicates if the value is a style property.</li>
	 * <li>Indicates if a style property is set on the element's private style
	 * or a shared style.</li>
	 * <li>Performs property conversions as needed for the Factory context.
	 * </li>
	 * </ul>
	 * 
	 * @param propName
	 *            the name of the property to get
	 * @return the factory property handle, or <code>null</code> if either 1)
	 *         no property exists with the given name or 2) the property is a
	 *         style property and is not set in a private style.
	 */
	public FactoryPropertyHandle getFactoryPropertyHandle( String propName )
	{
		DesignElement element = getElement( );
		ElementPropertyDefn propDefn = element.getPropertyDefn( propName );
		if ( propDefn == null )
			return null;
		FactoryPropertyHandle handle = new FactoryPropertyHandle( this,
				propDefn );
		if ( handle.isSet( ) )
			return handle;
		return null;
	}
	/**