Bug 9159 Classpath wizard should not complain when adding missing source folder
Build 20020125 - Define a project A with source folder 'src1'. - Go to the .classpath file and edit it to insert one extra line: <classpathentry kind="src" path="src2"/> below the line referring to first source folder: <classpathentry kind="src" path="src1"/>. - Now, try to add this missing source folder 'src2', it isn't allowed by the wizard, one has to add a basic folder instead. Note: It is not such an uncommon scenario, the classpath modification could simply occur by catching up with a shared classpath having one more source folder on it, and which is locally missing.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/CPListLabelProvider.java
fVariableImage= reg.get(JavaPluginImages.IMG_OBJS_ENV_VAR);
		
		IWorkbench workbench= JavaPlugin.getDefault().getWorkbench();
		fProjectImage= workbench.getSharedImages().getImage(ISharedImages.IMG_OBJ_PROJECT);
	
		fMissingLibaryImage= reg.get(JavaPluginImages.IMG_OBJS_MISSING_JAR);
		fMissingVariableImage= reg.get(JavaPluginImages.IMG_OBJS_MISSING_ENV_VAR);
		fMissingFolderImage= reg.get(JavaPluginImages.IMG_OBJS_MISSING_PACKFRAG_ROOT);
		fMissingProjectImage= workbench.getSharedImages().getImage(ISharedImages.IMG_OBJ_PROJECT_CLOSED);
	
	}
	
	public String getText(Object element) {
		if (element instanceof CPListElement) {
			CPListElement cpentry= (CPListElement)element;
			IPath path= cpentry.getPath();
			switch (cpentry.getEntryKind()) {
				case IClasspathEntry.CPE_LIBRARY: {
					IResource resource= cpentry.getResource();
					if (resource instanceof IFolder) {
						StringBuffer buf= new StringBuffer(path.makeRelative().toString());
						buf.append(' ');
						buf.append(fClassLabel);
						if (!resource.exists()) {
							buf.append(' ');
							buf.append(fNewLabel);
						}
						return buf.toString();
					} else if (resource instanceof IFile) {
						if (ArchiveFileFilter.isArchivePath(path)) {