Error out on invalid `define-keymap' keywords

* lisp/subr.el (define-keymap--define): Error out on invalid
keywords (bug#51268).

* lisp/emacs-lisp/byte-opt.el (byte-optimize-define-keymap): Check
keywords at compile time.
* lisp/vc/cvs-status.el (cvs-status-mode-map): Fix keyword.

lisp/emacs-lisp/byte-opt.el

@@ -1211,6 +1211,9 @@ See Info node `(elisp) Integer Basics'."
     (while (and form
                 (keywordp (car form))
                 (not (eq (car form) :menu)))
+      (unless (memq (car form)
+                    '(:full :keymap :parent :suppress :name :prefix))
+        (error "Invalid keyword: %s" (car form)))
       (push (pop form) result)
       (when (null form)
         (error "Uneven number of keywords in %S" form))

lisp/subr.el

@@ -6664,7 +6664,8 @@ should be a MENU form as accepted by `easy-menu-define'.
             (:parent (setq parent value))
             (:suppress (setq suppress value))
             (:name (setq name value))
-            (:prefix (setq prefix value))))))
+            (:prefix (setq prefix value))
+            (_ (error "Invalid keyword: %s" keyword))))))
 
     (when (and prefix
                (or full parent suppress keymap))

lisp/vc/cvs-status.el

@@ -35,7 +35,7 @@
 ;;;
 
 (defvar-keymap cvs-status-mode-map
-  :inherit 'cvs-mode-map
+  :parent     'cvs-mode-map
   "n"         #'next-line
   "p"         #'previous-line
   "N"         #'cvs-status-next