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
* The parent shell used to show any dialogs.
	 */
	private Shell messageShell;
	/**
	 * Whether or not the copy has been canceled by the user.
	 */
	private boolean canceled = false;
	/**
	 * Whether or not the operation creates virtual folders and links instead of folders
	 * and files.
	 */
	private boolean createVirtualFoldersAndLinks = false;
	/**
	 * Whether or not the operation creates links instead of folders and files.
	 */
	private boolean createLinks = false;
	private String relativeVariable = null;
	/**
	 * Overwrite all flag.
	 */
	private boolean alwaysOverwrite = false;
	private String[] modelProviderIds;
	/**
	 * Returns a new name for a copy of the resource at the given path in the
	 * given workspace. This name is determined automatically.
	 * 
	 * @param originalName
	 *            the full path of the resource
	 * @param workspace
	 *            the workspace