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
*/
	public static String birtResourceFolder = null;
	/**
	 * Flag indicating that if initialize the context.
	 */
	protected static boolean isInitContext = false;
	/**
	 * Overwrite flag
	 */
	public static boolean isOverWrite;
	/**
	 * Application Context Attribute Name
	 */
	public static final String ATTR_APPCONTEXT_KEY = "AppContextKey"; 
	/**
	 * Application Context Attribute value
	 */
	public static final String ATTR_APPCONTEXT_VALUE = "AppContextValue"; 
	/**
	 * The initialized properties map
	 */
	public static Map initProps;
	/**
	 * viewer properties
	 */
	public static final String PROP_BASE_URL = "base_url"; 
	/**
	 * Get bookmark. If page exists, ignore bookmark.
	 * 
	 * @param request