Bug 153514 [Regression]Can't Drill-Through to reportdesign which is in the current path
Description: Can't Drill-Through to reportdesign which is in the current path Step to reproduce: 1. new a report named "target.rptdesign" and add label 2. new another report named "Drillthrough.rptdesign" and also add a label in it 3. Choose the lable in second report and edit its Hyperlink: Drill through target.rptdesign 4. preview it by any form Excepted result: Target.rptdesign can be drill-throughed Actual result: Display "The design file /D:/Eclipses/eclipse200608110630/plugins/org.eclipse.birt.report.viewer_2.1.0.v20060811-0630/birt/documents/4F9E34353BCD20DC7687037D6B8B7A25/Acceptance/Target.rptdesign can not be found. " But if Drill-Through with absolute path is ok.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/ReportDocumentReader.java
while ( iter.hasNext( ) )
		{
			TOCNode child = (TOCNode) iter.next( );
			generateTOCIndex( child );
		}
	}
	/**
	 * Add a toc node into the map which cache the map from toc display string
	 * to nodes.
	 * 
	 * @param node
	 *            the node.
	 * @param map
	 *            the map.
	 */
	private void addTOCNameEntry( TOCNode node, HashMap map )
	{
		List tocs = (List) map.get( node.getDisplayString( ) );
		if ( tocs == null )
		{
			tocs = new ArrayList( );
			map.put( node.getDisplayString( ), tocs );
		}
		tocs.add( node );
	}
	private void loadBookmarks( )
	{
		bookmarks = new HashMap( );
		if ( !archive.exists( BOOKMARK_STREAM ) )
		{