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
* @return whether the operation is a move or a copy
	 * @since 3.2
	 */
	protected boolean isMove() {
		return false;
	}
	private void display(InvocationTargetException e) {
		
		
		IDEWorkbenchPlugin.getDefault().getLog().log(
				StatusUtil.newStatus(IStatus.ERROR, MessageFormat.format(
						"Exception in {0}.performCopy(): {1}", 
						new Object[] { getClass().getName(),
								e.getTargetException() }), null));
		displayError(NLS
				.bind(
						IDEWorkbenchMessages.CopyFilesAndFoldersOperation_internalError,
						e.getTargetException().getMessage()));
	}
	/**
	 * Copies the given URIS 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 uris
	 *            the URIs to copy
	 * @param destination
	 *            destination to which files will be copied
	 * @see WorkspaceModifyOperation