Generate OpenLDAP id for configure

aclocal.m4

@@ -10,6 +10,7 @@ dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
 dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
 dnl PARTICULAR PURPOSE.
 
+dnl $OpenLDAP$
 dnl Copyright 1998-1999 The OpenLDAP Foundation,  All Rights Reserved.
 dnl COPYING RESTRICTIONS APPLY, See COPYRIGHT file
 dnl

build/openldap.m4

@@ -6,6 +6,8 @@ dnl
 dnl OpenLDAP Autoconf Macros
 dnl
 dnl --------------------------------------------------------------------
+AC_DEFUN([OL_RCS_ID], "[$]$1[$]")dnl
+dnl --------------------------------------------------------------------
 dnl Restricted form of AC_ARG_ENABLE that limits user options
 dnl
 dnl $1 = option name

configure.in

@@ -14,6 +14,7 @@ define([AC_CACHE_SAVE], )dnl
 dnl Configure.in for OpenLDAP
 AC_INIT(build/version)dnl
 AC_CONFIG_AUX_DIR(build)dnl
+OPENLDAP_ID=OL_RCS_ID(OpenLDAP)
 
 OL_VERSION=`cat $ac_aux_dir/version`
 if test -z "$OL_VERSION"; then