Bug 118784 Relative path cannot be used in report property for drill-through link.
Description: Relative path cannot be used in report property for drill-through link. Steps to reproduce: 1. New a report as report1, insert a label and define a bookmark on it. 2. New a report as report2, insert a label and define a drill-through link, input report1 name in report property but got warning about invalid report design. Expected result: Relative path can be used here. Actual result: It is not recognized.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/HyperlinkBuilder.java
paramterChooser = new ComboBoxCellEditor( table,
				new String[0],
				SWT.READ_ONLY );
		ExpressionCellEditor valueEditor = new ExpressionCellEditor( table );
		valueEditor.setDataSetList( dataSetList );
		paramBindingTable.setCellEditors( new CellEditor[]{
				paramterChooser, valueEditor
		} );
		paramBindingTable.setContentProvider( contentProvider );
		paramBindingTable.setLabelProvider( labelProvider );
		paramBindingTable.setCellModifier( cellModifier );
		paramBindingTable.setInput( bindingList );
	}
	private void clearArea( )
	{
		Control[] controls = displayArea.getChildren( );
		for ( int i = 0; i < controls.length; i++ )
		{
			controls[i].dispose( );
		}
	}
	private void createExpressionButton( Composite parent, final Text text )
	{
		Button button = new Button( parent, SWT.PUSH );
		button.setLayoutData( new GridData( ) );
		button.setText( "..." ); 
		button.setToolTipText( TOOLTIP_EXPRESSION );
		button.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{