New macro 'ert-with-message-capture'

New macro 'ert-with-message-capture'

* lisp/emacs-lisp/ert-x.el (ert-with-message-capture): New macro.
(Bug#25158)

* test/lisp/autorevert-tests.el (auto-revert--wait-for-revert)
(auto-revert-test00-auto-revert-mode)
(auto-revert-test01-auto-revert-several-files)
(auto-revert-test02-auto-revert-deleted-file)
(auto-revert-test03-auto-revert-tail-mode)
(auto-revert-test04-auto-revert-mode-dired):
* test/lisp/filenotify-tests.el (file-notify-test03-autorevert): Use
ert-with-message-capture.