Bug 156497 [Regression][Acceptance]Report isn't refreshed when delete used library file.
Description: Report isn't refreshed when delete used library file. Steps to reproduce: 1.New a library, add a label, input actuate. 2.New a report, extend lib.label 3.Delete the library file. 4.Refresh the report in Outline of the report Expected result: Empty label in Layout. Actual result: label with content "actuate" in Layout.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
* <li>The structure defined in design file overrides the one with the same
	 * name in library file.
	 * <li>The structure defined in preceding library overrides the one with
	 * the same name in following library file.
	 * <ul>
	 * 
	 * @param propName
	 *            name of the list property
	 * @param nameMember
	 *            name of the name member
	 * @return the filtered structure list with the above rule.
	 */
	List getFilteredStructureList( String propName, String nameMember )
	{
		List list = new ArrayList( );
		PropertyHandle propHandle = getPropertyHandle( propName );
		assert propHandle != null;
		Set names = new HashSet( );
		Iterator iter = propHandle.iterator( );
		while ( iter.hasNext( ) )
		{
			StructureHandle s = (StructureHandle) iter.next( );
			String nameValue = (String) s.getProperty( nameMember );
			if ( !names.contains( nameValue ) )
			{
				list.add( s );
				names.add( nameValue );
			}
		}
		List theLibraries = getLibraries( );