Bug 310494 [LinkedResources] Preference "Link and create virtual folders" does not work
I20100425-2000 The 2 options on the Linked Resourced with name "Link and create virtual folders" don't work. When they are selected, dropping items does nothing. In CopyFilesAndFoldersOperation#copyOrLinkFiles(..), the test "hasFlag(dropOperation, ImportTypeDialog.IMPORT_VIRTUAL_FOLDERS_AND_LINKS)" always fails because dropOperation is always COPY.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/actions/CopyFilesAndFoldersOperation.java
* @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 virtual folders and links will be created under the destination
	 * container.
	 * 
	 * @param value
	 * @since 3.6
	 */
	public void setVirtualFolders(boolean value) {
		createVirtualFoldersAndLinks = value;
	}
	/**
	 * Set whether or not links will be created under the destination container.
	 * 
	 * @param value
	 * @since 3.6
	 */
	public void setCreateLinks(boolean value) {