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/elements/ExtendedItem.java
* 
	 * @return the script property name
	 */
	public String getScriptPropertyName( )
	{
		if ( provider != null )
		{
			IPropertyDefinition defn = provider.getScriptPropertyDefinition( );
			return defn == null ? null : defn.getName( );
		}
		return null;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.core.DesignElement#getStrategy()
	 */
	public PropertySearchStrategy getStrategy( )
	{
		return ExtendedItemPropSearchStrategy.getInstance( );
	}
	/**
	 * Sets the extension name for this extended item. At the same time,
	 * initialize the extension provider and slot.
	 * 
	 * @param extension
	 *            the extension name to set
	 */
	private void setExtensionName( String extension )
	{