Restore temporarily reverted bytecomp change

* lisp/emacs-lisp/bytecomp.el (=, <, >, <=, >=): Don't optimize multi-arg case.

Fixes: debbugs:18767

lisp/ChangeLog

+2014-10-20  Stefan Monnier  <monnier@iro.umontreal.ca>
+
+	* emacs-lisp/bytecomp.el (=, <, >, <=, >=): Don't optimize multi-arg
+	case (bug#18767).
+
 2014-10-20  Glenn Morris  <rgm@gnu.org>
 	* Version 24.4 released.

lisp/emacs-lisp/bytecomp.el

@@ -3261,11 +3261,11 @@ If it is nil, then the handler is \"byte-compile-SYMBOL.\""
 (byte-defop-compiler cons		2)
 (byte-defop-compiler aref		2)
 (byte-defop-compiler set		2)
-(byte-defop-compiler (= byte-eqlsign)	2-and)
-(byte-defop-compiler (< byte-lss)	2-and)
-(byte-defop-compiler (> byte-gtr)	2-and)
-(byte-defop-compiler (<= byte-leq)	2-and)
-(byte-defop-compiler (>= byte-geq)	2-and)
+(byte-defop-compiler (= byte-eqlsign)	2) ;; -and  bug#18767
+(byte-defop-compiler (< byte-lss)	2) ;; -and  bug#18767
+(byte-defop-compiler (> byte-gtr)	2) ;; -and  bug#18767
+(byte-defop-compiler (<= byte-leq)	2) ;; -and  bug#18767
+(byte-defop-compiler (>= byte-geq)	2) ;; -and  bug#18767
 (byte-defop-compiler get		2)
 (byte-defop-compiler nth		2)
 (byte-defop-compiler substring		2-3)
@@ -3332,6 +3332,7 @@ If it is nil, then the handler is \"byte-compile-SYMBOL.\""
 (defun byte-compile-and-folded (form)
   "Compile calls to functions like `<='.
 These implicitly `and' together a bunch of two-arg bytecodes."
+  ;; FIXME: bug#18767 means we can't do it this way!
   (let ((l (length form)))
     (cond
      ((< l 3) (byte-compile-form `(progn ,(nth 1 form) t)))