Bug 186940 Style name in theme cannot be identify by auto when reopen the library[01]
Description: Style name in theme cannot be identify by auto when reopen the library[01] Step: 1.Open a library and add a theme 2.New a style on the theme and use the default name that is "NewStyle" 3.Save the library, close it and reopen it again. 4.New another style on the same theme Actual result: The default style name on second times is also "NewStyle" Exception result: The default style name on second times is "NewStyle1"
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/api/ElementFactoryTest.java
assertTrue( element instanceof CellHandle );
		element = factory.newElement( ReportDesignConstants.COLUMN_ELEMENT,
				null );
		assertTrue( element instanceof ColumnHandle );
		
		element = factory.newElement( ReportDesignConstants.DATA_SET_ELEMENT,
				null );
		assertNull( element );
		element = factory.newElement(
				ReportDesignConstants.DATA_SOURCE_ELEMENT, null );
		assertNull( element );
		element = factory
				.newElement( ReportDesignConstants.EXTENDED_ITEM, null );
		assertTrue( element instanceof ExtendedItemHandle );
		element = factory.newElement( ReportDesignConstants.FREE_FORM_ITEM,
				null );
		assertTrue( element instanceof FreeFormHandle );
		element = factory.newElement(
				ReportDesignConstants.GRAPHIC_MASTER_PAGE_ELEMENT, null );
		assertTrue( element instanceof GraphicMasterPageHandle );
		element = factory.newElement( ReportDesignConstants.GRID_ITEM, null );
		assertTrue( element instanceof GridHandle );
		element = factory.newElement( ReportDesignConstants.IMAGE_ITEM, null );
		assertTrue( element instanceof ImageHandle );
		element = factory.newElement( ReportDesignConstants.LABEL_ITEM, null );
		assertTrue( element instanceof LabelHandle );
		element = factory.newElement( ReportDesignConstants.LINE_ITEM, null );
		assertTrue( element instanceof LineHandle );
		element = factory.newElement( ReportDesignConstants.LIST_GROUP_ELEMENT,
				null );