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 (operationMask & flag) != 0;
	}
	/**
	 * Copies 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 3.2
	 */
	public void copyFiles(final String[] fileNames, IContainer destination) {
		IFileStore[] stores = buildFileStores(fileNames);
		if (stores == null) {
			return;
		}
		copyFileStores(destination, stores, true, null);
	}
	/**
	 * Copies the given files and folders to the destination without forking a
	 * new Thread or blocking using a WorkspaceModifyOperation. It is
	 * recommended that this method only be called from a {@link WorkspaceJob}
	 * to avoid possible deadlock.
	 * 
	 * @param fileNames
	 *            names of the files to copy
	 * @param destination