Bug 96952 [build path] project settings: library tab enablement and focus
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/LibrariesWorkbookPage.java
NewWizardMessages.LibrariesWorkbookPage_libraries_addextjar_button, 
			NewWizardMessages.LibrariesWorkbookPage_libraries_addvariable_button, 
			NewWizardMessages.LibrariesWorkbookPage_libraries_addlibrary_button, 
			NewWizardMessages.LibrariesWorkbookPage_libraries_addclassfolder_button, 
			 null,  
			NewWizardMessages.LibrariesWorkbookPage_libraries_edit_button, 
			NewWizardMessages.LibrariesWorkbookPage_libraries_remove_button,
			 null,  
			NewWizardMessages.LibrariesWorkbookPage_libraries_replace_button
		};		
				
		LibrariesAdapter adapter= new LibrariesAdapter();
				
		fLibrariesList= new TreeListDialogField(adapter, buttonLabels, new CPListLabelProvider());
		fLibrariesList.setDialogFieldListener(adapter);
		fLibrariesList.setLabelText(NewWizardMessages.LibrariesWorkbookPage_libraries_label); 
		fLibrariesList.enableButton(IDX_REMOVE, false);
		fLibrariesList.enableButton(IDX_EDIT, false);
		fLibrariesList.enableButton(IDX_REPLACE, false);
		fLibrariesList.setViewerSorter(new CPListElementSorter());
	}
		
	public void init(IJavaProject jproject) {
		fCurrJProject= jproject;
		updateLibrariesList();
	}
	
	
	private void updateLibrariesList() {
		List cpelements= fClassPathList.getElements();