bug#1004: 23.0.60; Error visiting C files

[Eli Zaretskii]

> From: Glenn Morris <rgm@gnu.org>
> Cc: 1004@emacsbugs.donarmstrong.com
> Date: Fri, 19 Sep 2008 14:13:27 -0400
> 
> reassign 1004 emacs,cc-mode
> forcemerge 913 1004
> stop
> 
> Eli Zaretskii wrote:
> 
> > Eval error in the `c-lang-defconst' for `c-cpp-matchers' in c-mode:
> > Eval error in the `c-lang-defconst' for `c-matchers-1' in c-mode:
> > File mode specification error: (error "`c-opt-cpp-prefix' got no (prior) 
> > value in c-mode (might be a cyclic reference)")
> 
> You need to bootstrap. See "bug" 913, 959.

I don't want to bootstrap just because a few files need to be
recompiled.

I think we should fix the dependencies in lisp/Makefile.in to do that
automatically.