Use integer syntax for the MODE argument to #'set-file-modes

Hello!

We need this change to get org-mode compiling with recent XEmacs 21.5. On
previous 21.5 and current 21.4, the problem manifests itself at runtime, not
compile time, like so:

  (set-file-modes "/tmp/aidan/foo.el" ?\755)
  => Wrong type argument: integerp, ?í

One old reason to go for the ?\755 syntax instead of the #o755 syntax under
GNU Emacs was to be that older versions of GNU Emacs didn’t support #o755,
but, to my knowledge, every released GNU Emacs since March 2000 has
supported the latter syntax.

Best,

Aidan Kehoe, the XEmacs project.

ChangeLog addition:

2010-08-21  Aidan Kehoe  <kehoea@parhasard.net>

	* ob-tangle.el (org-babel-tangle): Change the MODE argument to
	#'set-file-modes to use integer, not character syntax, avoiding
	compile problems with recent XEmacs.

lisp/ob-tangle.el

@@ -187,7 +187,7 @@ exported source code blocks by language."
 			  (insert content)
 			  (write-region nil nil file-name))))
 		    ;; if files contain she-bangs, then make the executable
-		    (when she-bang (set-file-modes file-name ?\755))
+		    (when she-bang (set-file-modes file-name #o755))
                     ;; update counter
                     (setq block-counter (+ 1 block-counter))
                     (add-to-list 'path-collector file-name)))))