Bug 11109 F1 no longer works in Packages view
new context ID?
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerPart.java
menu.appendToGroup(IContextMenuConstants.GROUP_GOTO, fZoomInAction);
		addGotoMenu(menu);
		fOpenCUAction.update();
		if (fOpenCUAction.isEnabled())
			menu.appendToGroup(IContextMenuConstants.GROUP_OPEN, fOpenCUAction);
			
		addOpenWithMenu(menu, selection);
		
		addOpenToMenu(menu, selection);
		addRefactoring(menu);
		ContextMenuGroup.add(menu, fStandardGroups, fViewer);
		
		if (fAddBookmarkAction.canOperateOnSelection())
			menu.appendToGroup(IContextMenuConstants.GROUP_REORGANIZE, fAddBookmarkAction);
					
		menu.appendToGroup(IContextMenuConstants.GROUP_BUILD, fRefreshAction);
		fRefreshAction.selectionChanged(selection);
		menu.add(new Separator());
		if (fPropertyDialogAction.isApplicableForSelection())
			menu.appendToGroup(IContextMenuConstants.GROUP_PROPERTIES, fPropertyDialogAction);	
	}
	 void addGotoMenu(IMenuManager menu) {
		MenuManager gotoMenu= new MenuManager(PackagesMessages.getString("PackageExplorer.gotoTitle")); 
		menu.appendToGroup(IContextMenuConstants.GROUP_GOTO, gotoMenu);
		gotoMenu.add(fBackAction);
		gotoMenu.add(fForwardAction);
		gotoMenu.add(fUpAction);
		gotoMenu.add(fGotoTypeAction);
		gotoMenu.add(fGotoPackageAction);
	}