Bug 145716 [deploy]WORKING_FOLDER_ACCESS_ONLY doesn't work for reports inside WebViewerExample folder
Description: WORKING_FOLDER_ACCESS_ONLY doesn't restrict report inside WebViewerExample folder Steps to reproduce: 1. Deploy birt 2. Set BIRT_VIEWER_WORKING_FOLDER to local folder using absolute path 3. Set WORKING_FOLDER_ACCESS_ONLY to true 4. Preview report inside WebViewerExample folder using relative path Expected result: Preview fails because the report isn't under working folder Actual result: Preview is ok
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
* @param request
	 * @return
	 */
	public static boolean isOverwrite( HttpServletRequest request )
	{
		boolean overwrite = false;
		if ( "true".equalsIgnoreCase( getParameter( request, PARAM_OVERWRITE ) ) ) 
		{
			overwrite = true;
		}
		return overwrite;
	}
	/***************************************************************************
	 * protected routines
	 **************************************************************************/
	/**
	 * Checks if a given file name is a relative path.
	 * 
	 * @param fileName
	 *            The file name.
	 * @return A <code>boolean</code> value indicating if the file name is a
	 *         relative path or not.
	 */
	public static boolean isRelativePath( String fileName )
	{
		return !new File( fileName ).isAbsolute( );
	}
	/**
	 * Check whether report parameter exists in the url.
	 *