Bug 145698 Name change won't enable "restore property" button
Steps to reproduce: 1.New a report, extends lib.label 2.Choose the label, switch to property editor, chang its name to "aa" 3.Choose the label again Expected result: "Restore property" button is enabled Actual result: "Restore property" button is grayed out
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
* @return a list containing parsing errors. Each element in the list is
	 *         <code>ErrorDetail</code>.
	 * 
	 * @see ErrorDetail
	 */
	public List getErrorList( )
	{
		return module.getErrorList( );
	}
	/**
	 * Returns the file name of the design. This is the name of the file from
	 * which the design was read, or the name to which the design was last
	 * written.
	 * 
	 * @return the file name
	 */
	public String getFileName( )
	{
		return module.getFileName( );
	}
	/**
	 * Returns the flatten Parameters/ParameterGroups of the design. This method
	 * put all Parameters and ParameterGroups into a list then return it. The
	 * return list is sorted by on the display name of the parameters.
	 * 
	 * @return the sorted, flatten parameters and parameter groups.
	 */
	public List getFlattenParameters( )
	{
		ArrayList list = new ArrayList( );