Bug 154178 Support projectFolder in BIRT viewer
If the report supports projectFolder, the viewer also need to enhance for this feature.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
String fileName = defaultName;
		BaseAttributeBean attrBean = (BaseAttributeBean) request
				.getAttribute( IBirtConstants.ATTRIBUTE_BEAN );
		if ( attrBean == null )
			return fileName + ".pdf"; 
		String baseName = attrBean.getReportDesignName( );
		if ( baseName == null || baseName.length( ) == 0 )
			baseName = attrBean.getReportDocumentName( );
		assert baseName != null && baseName.length( ) > 0;
		
		int index = baseName.lastIndexOf( '/' );
		if ( index == -1 )
			index = baseName.lastIndexOf( '\\' );
		
		
		if ( index != -1 )
		{
			baseName = baseName.substring( index + 1 );
		}
		
		
		
		int dotIndex = baseName.lastIndexOf( '.' );
		if ( dotIndex > 0 )
		{
			fileName = baseName.substring( 0, dotIndex );
		}
		
		for ( int i = 0; i < fileName.length( ); i++ )
		{