Make Info-mode usable with UTF-8 info docs.

Make Info-mode usable with UTF-8 info docs.

This changeset, which I fully admit, is an ugly hack.  Sorry, not
sorry. But it means that UTF-8 info documents are now both readable
and navigable.  Finally I can read info docs again!!

	* lisp/info.el (Info-find-file-node): Add a horrible ugly hack to
	the horrible ugly hack so that this won't lose when searching a
	UTF-8 info file.
	(Info-insert-file-contents): Cater for info files that have a
	'Local variables' section.
	Replace the funky chars throughout the file with their octal
	numeric to keep things cleaner.

Signed-off-by: Steve Youngs <steve@sxemacs.org>