This replaces part of previous change.
extern Lisp_Object truncate_undo_list ();
/* defined in textprop.c */
-extern Lisp_Object Qmodification_hooks, Qinsert_before_hooks;
-extern Lisp_Object Qinsert_after_hooks;
+extern Lisp_Object Qmodification_hooks;
+extern Lisp_Object Qinsert_in_front_hooks, Qinsert_behind_hooks;
/* Nonzero means Emacs has already been initialized.
Used during startup to detect startup of dumped Emacs. */