GitLab

	* bindings.el (last-buffer): Move to simple.el.
	* simple.el (last-buffer): Move here.
	(get-next-valid-buffer): New function.
	(next-buffer): Use frame-local buffer list, maintain buried buffer list.
	(prev-buffer): Ditto. Rename to `previous-buffer'.

	* menu-bar.el (menu-bar-update-buffers): Update references to `prev-buffer'.
	* bindings.el (global-map): Ditto.