Bug 33216 Source actions in context menu on types inconsistency
1) select a type in the package explorer 2) bring up the context menu ->the source actions are shown in-line and the menu is huge. Given that we show a source submenu in other parts (e.g. the editor) and do the same for the refactoring actions we should also move the source actions into a submenu.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerActionGroup.java
new ImportActionGroup(fPart),
			new GenerateActionGroup(fPart), 
			fBuildActionGroup= new BuildActionGroup(fPart),
			new JavaSearchActionGroup(fPart),
			new ProjectActionGroup(fPart), 
			fWorkingSetFilterActionGroup= new WorkingSetFilterActionGroup(part.getViewer(), JavaUI.ID_PACKAGES, shell, createTitleUpdater()),
			fCustomFiltersActionGroup= new CustomFiltersActionGroup(fPart, fPart.getViewer()),
			new LayoutActionGroup(part)});
		
		PackagesFrameSource frameSource= new PackagesFrameSource(fPart);
		FrameList frameList= new FrameList(frameSource);
		frameSource.connectTo(frameList);
			
		fZoomInAction= new GoIntoAction(frameList);
		fBackAction= new BackAction(frameList);
		fForwardAction= new ForwardAction(frameList);
		fUpAction= new UpAction(frameList);
		
		fRenameResourceAction= new RenameResourceAction(shell);		
		fMoveResourceAction= new MoveResourceAction(shell);
		
		fGotoTypeAction= new GotoTypeAction(fPart);
		fGotoPackageAction= new GotoPackageAction(fPart);
		fGotoResourceAction= new GotoResourceAction(fPart);
		fCollapseAllAction= new CollapseAllAction(fPart);	
		fToggleLinkingAction = new ToggleLinkingAction(fPart); 
		fMemberFilterActionGroup= new MemberFilterActionGroup(fPart.getViewer(), "PackageView", true);  
		
		provider.addSelectionChangedListener(this);
		update(selection);