Bug 176786 Issue when use ${env.working.folder} as context path.[0601]
Description: Issue when use ${env.working.folder} as context path Build number:2.2.0.v20070308 Steps to reproduce: 1. Add environment variable as below: env.working.folder(D:\temp\working_folder) env.document.folder (D:\temp\document_folder) env.image.folder(D:\temp\image_folder) 2. Deploy WebViewerExample folder in Tomcat5.5.7 2. Set context parameter as attached with form like ${env.working.folder}. 3. Start Server Expected result: Content inside WebViewerExample folder is untouched. Actual result: After server is started, refresh and check the WebViewerExample folder. Only webcontent and WEB-INF folders are left, other folders and two sample reports disappear. Error log:N/A
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
* 
	 * @param request
	 *            the request to retrieve
	 * @return the resource folder of the request
	 */
	public static String getResourceFolder( HttpServletRequest request )
	{
		String resourceFolder = null;
		
		resourceFolder = getParameter( request, PARAM_RESOURCE_FOLDER );
		
		
		if ( resourceFolder == null || resourceFolder.trim( ).length( ) <= 0 )
			resourceFolder = birtResourceFolder;
		return resourceFolder;
	}
	/**
	 * Push User-defined application context object into engine context map.
	 * 
	 * @param map
	 * @param request
	 * @return
	 */
	public static Map pushAppContext( Map map, HttpServletRequest request )
	{
		if ( map == null )
			map = new HashMap( );
		
		String appContextKey = (String) request
				.getAttribute( ATTR_APPCONTEXT_KEY );