Use a @configure_input@ comment at the start of generated Makefiles

Makefile.in

-# DIST: This is the distribution Makefile for Emacs.  configure can
-# DIST: make most of the changes to this file you might want, so try
-# DIST: that first.
+### @configure_input@
 
 # Copyright (C) 1992-2013 Free Software Foundation, Inc.
 

admin/unidata/Makefile.in

-# Makefile -- Makefile to generate character property tables.
+### @configure_input@
 
 # Copyright (C) 2012-2013 Free Software Foundation, Inc.
 

doc/emacs/Makefile.in

-#### Makefile for the Emacs Manual
+### @configure_input@
 
 # Copyright (C) 1994, 1996-2013 Free Software Foundation, Inc.
 

doc/lispintro/Makefile.in

-#### Makefile for the Emacs Lisp Introduction manual
+### @configure_input@
 
 # Copyright (C) 1994-1999, 2001-2013 Free Software Foundation, Inc.
 

doc/lispref/Makefile.in

-# Makefile for the GNU Emacs Lisp Reference Manual.
+### @configure_input@
 
 # Copyright (C) 1990-1996, 1998-2013 Free Software Foundation, Inc.
 

doc/misc/Makefile.in

-#### Makefile for documentation other than the Emacs manual.
+### @configure_input@
 
 # Copyright (C) 1994, 1996-2013 Free Software Foundation, Inc.
 

leim/Makefile.in

-# Makefile for leim subdirectory in GNU Emacs.
+### @configure_input@
 
 # Copyright (C) 1997-2013 Free Software Foundation, Inc.
 # Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,

lib-src/Makefile.in

-# Makefile for lib-src subdirectory in GNU Emacs.
-# Copyright (C) 1985, 1987-1988, 1993-1994, 2001-2013 Free Software
-# Foundation, Inc.
+### @configure_input@
+
+# Copyright (C) 1985, 1987-1988, 1993-1994, 2001-2013
+#   Free Software Foundation, Inc.
 
 # This file is part of GNU Emacs.
 

lisp/Makefile.in

-# Maintenance productions for the Lisp directory
+### @configure_input@
+
 # Copyright (C) 2000-2013 Free Software Foundation, Inc.
 
 # This file is part of GNU Emacs.

lwlib/Makefile.in

+### @configure_input@
+
 # Copyright (C) 1992, 1993 Lucid, Inc.
 # Copyright (C) 1994, 2001-2013 Free Software Foundation, Inc.
 #

nextstep/Makefile.in

-### nextstep/Makefile for GNU Emacs
+### @configure_input@
 
 ## Copyright (C) 2012-2013 Free Software Foundation, Inc.
 

nt/Makefile.in

-# nt/Makefile for GNU Emacs.
+### @configure_input@
 
 # Copyright (C) 2013 Free Software Foundation, Inc.
 

oldXMenu/Makefile.in

-## Makefile for oldXMenu
+### @configure_input@
 
 ## Copyright 1985, 1986, 1987 by the Massachusetts Institute of Technology
 

src/Makefile.in

-# src/Makefile for GNU Emacs.
+### @configure_input@
 
 # Copyright (C) 1985, 1987-1988, 1993-1995, 1999-2013 Free Software
 # Foundation, Inc.

test/automated/Makefile.in

-# Maintenance productions for the automated test directory
+### @configure_input@
+
 # Copyright (C) 2010-2013 Free Software Foundation, Inc.
 
 # This file is part of GNU Emacs.