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 monitor that information will be sent to.
	 * @return IResource[] the resulting {@link IResource}[]
	 * @see WorkspaceModifyOperation
	 * @see WorkspaceJob
	 * @since 3.2
	 */
	public IResource[] copyResourcesInCurrentThread(
			final IResource[] resources, IContainer destination,
			IProgressMonitor monitor) {
		return copyResources(resources, destination, false);
	}
	/**
	 * Copies the given resources to the destination.
	 * 
	 * @param resources
	 *            the resources to copy
	 * @param destination
	 *            destination to which resources will be copied
	 * @return IResource[] the resulting {@link IResource}[]
	 */
	private IResource[] copyResources(final IResource[] resources,
			IContainer destination, boolean fork) {
		final IPath destinationPath = destination.getFullPath();
		final IResource[][] copiedResources = new IResource[1][0];
		
		
		
		IStatus resourceStatus = checkExist(resources);
		if (resourceStatus.getSeverity() != IStatus.OK) {
			displayError(resourceStatus);