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/ModuleHandle.java
* 
	 * @param library
	 *            the given library to drop
	 * @throws SemanticException
	 *             if errors occured when drop the library.It may be because
	 *             that the library is not found in the design or that some
	 *             elements can not be localized properly.
	 */
	public void dropLibraryAndBreakExtends( LibraryHandle library )
			throws SemanticException
	{
		if ( library == null )
			return;
		LibraryCommand command = new LibraryCommand( module );
		command.dropLibraryAndBreakExtends( (Library) library.getElement( ) );
	}
	/**
	 * Adds one attribute listener. The duplicate listener will not be added.
	 * 
	 * @param listener
	 *            the attribute listener to add
	 */
	public void addAttributeListener( IAttributeListener listener )
	{
		getModule( ).addAttributeListener( listener );
	}
	/**
	 * Removes one attribute listener. If the listener not registered, then the
	 * request is silently ignored.
	 *