Bug 296691 Change new Groups API to Virtual Resource API
If we decide that 'virtual' is the right naming for new resources concept, I will make the following changes. Add IResource#VIRTUAL flag to use in #create methods Add IResource#isVirtual indicating that a resource is virtual Remove IResource#isGroup Remove IFolder#createGroup
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/actions/CopyFilesAndFoldersOperation.java
* Create links of the given files and folders to the destination. The
	 * current Thread is halted while the resources are copied using a
	 * WorkspaceModifyOperation. This method should be called from the UI
	 * Thread.
	 * 
	 * @param fileNames
	 *            names of the files to copy
	 * @param destination
	 *            destination to which files will be copied
	 * @see WorkspaceModifyOperation
	 * @see Display#getThread()
	 * @see Thread#currentThread()
	 * @since 3.6
	 */
	public void linkFiles(final String[] fileNames, IContainer destination) {
		IFileStore[] stores = buildFileStores(fileNames);
		if (stores == null) {
			return;
		}
		createLinks = true;
		copyFileStores(destination, stores, true, null);
	}
	/**
	 * Set whether or not groups and links will be created under the destination
	 * container.
	 * 
	 * @param value
	 * @since 3.6
	 */
	public void setCreateGroups(boolean value) {