Bug 283442 [UI] Refactor the rendering class names
In order to bring the model closer to the way in which we talk about it we should re-factor it to remove references to 'factory'. For now the re-factoring will to replace 'PartRenderer' with 'PartRenderingEngine' and to replace '<xxx>Factory' with '<xxx>Renderer'. Post 0.9 we expect to change these again but this will make the initial story clearer.
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/workbench/ui/renderers/swt/SWTPartFactory.java
Composite composite = null;
		while (!(widgetObject instanceof Composite)
				&& widgetObject instanceof Control) {
			widgetObject = ((Control) widgetObject).getParent();
		}
		if (!(widgetObject instanceof Composite)) {
			return null;
		}
		composite = (Composite) widgetObject;
		if (composite.getLayout() instanceof RowLayout) {
			RowLayout rl = (RowLayout) composite.getLayout();
			orientation = rl.type;
		}
		ToolBarManager manager = new ToolBarManager(SWT.FLAT | orientation);
		ToolBar swtToolBar = manager.createControl(composite);
		swtToolBar.setData(PartFactory.OWNING_ME, toolbar);
		EList<MToolBarItem> items = toolbar.getItems();
		if (items != null && items.size() > 0) {
			for (MToolBarItem toolBarItem : toolbar.getItems()) {
				createToolBarItem(part, manager, toolBarItem);
			}
		}
		manager.update(true);
		return swtToolBar;
	}
	private void createToolBarItem(MPart<?> part, ToolBarManager manager,
			final MToolBarItem toolBarItem) {
		manager.add(new HandledContributionItem(toolBarItem, context));
	}
	private void createMenuItem(MPart<?> part, final MenuManager manager,