Bug 214204 Only document content in document folder should be removed.[0601]
Description: Only document related content in document folder should be removed. Build number:2.3.0.v20080103 Steps to reproduce: 1. Deploy BIRT. 2. Edit web.xml to set BIRT_VIEWER_DOCUMENT_FOLDER to your local path and there are content inside the path. 3. Start server and click View Example to preview sample report. Expected result: Only content created by viewer should be removed in specified document folder. Actual result: All contents are deleted despite whether they are related with BIRT. Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
/**
	 * viewer properties
	 */
	public static final String PROP_BASE_URL = "base_url"; 
	/**
	 * Engine supported output formats
	 */
	public static String[] supportedFormats = {PARAM_FORMAT_HTML,
			PARAM_FORMAT_PDF};
	/**
	 * Flag that indicated if support print on the server side.
	 */
	public static boolean isSupportedPrintOnServer = true;
	/**
	 * Flag that indicated if clean session files.
	 */
	public static boolean isCleanSessionFiles = true;
	/**
	 * Optimized HTML output flag
	 */
	public static boolean isAgentStyle = true;
	/**
	 * Get bookmark. If page exists, ignore bookmark.
	 * 
	 * @param request
	 * @return the bookemark
	 */
	public static String getBookmark( HttpServletRequest request )
	{
		int page = getParameterAsInt( request, PARAM_PAGE );