Bug 145724 Change version after auto convert
By the request of 136536, user get warning message to confirm the auto convert. If user select yes, the file convert to newest format, but the version is still old. If user open this file again, he'll get the warning message even the file converted.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleUtil.java
*            the current session of the report design
	 * @param fileName
	 *            the file name of the report design
	 * @param is
	 *            the input stream of the report design
	 * @return true if the input stream is a valid report design, otherwise
	 *         false
	 */
	public static boolean isValidDesign( SessionHandle sessionHandle,
			String fileName, InputStream is )
	{
		ReportDesign design = null;
		try
		{
			design = DesignReader.getInstance( ).read(
					sessionHandle.getSession( ), fileName, is );
			return design != null;
		}
		catch ( DesignFileException e )
		{
			return false;
		}
	}
	/**
	 * Justifies whether a library resource with the given file name is a valid
	 * library.
	 * 
	 * @param sessionHandle
	 *            the current session of the library
	 * @param fileName