ibuffer generate autoloads to non-versioned file.

* lisp/Makefile.in: Add ibuffer-loaddefs to autogenel.
* lisp/ibuf-ext.el: Update file local.
* lisp/ibuffer.el: Remove autoloads and add a require.
* test/lisp/ibuffer-tests.el: Test that autoload is working.

test/lisp/ibuffer-tests.el

@@ -0,0 +1,34 @@
+;;; ibuffer-tests.el --- Test suite. -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015 Free Software Foundation, Inc.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Code:
+(require 'ert)
+(require 'ibuffer)
+
+(ert-deftest ibuffer-autoload ()
+  "Tests to see whether reftex-auc has been autoloaded"
+  (should
+   (fboundp 'ibuffer-mark-unsaved-buffers))
+  (should
+   (autoloadp
+    (symbol-function
+     'ibuffer-mark-unsaved-buffers))))
+
+(provide 'ibuffer-tests)
+;; ibuffer-tests.el ends here