Cleaned sed by using configcache list

base/sed/sed.conf

@@ -1,7 +1,8 @@
-# --- T2-COPYRIGHT-NOTE-BEGIN ---
+# --- SDE-COPYRIGHT-NOTE-BEGIN ---
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 # 
-# T2 SDE: package/.../sed/sed.conf
+# Filename: package/.../sed/sed.conf
+# Copyright (C) 2007 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 # Copyright (C) 1998 - 2003 Clifford Wolf
 # 
@@ -11,9 +12,12 @@
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; version 2 of the License. A copy of the
 # GNU General Public License can be found in the file COPYING.
-# --- T2-COPYRIGHT-NOTE-END ---
+# --- SDE-COPYRIGHT-NOTE-END ---
 
 # workaround for sed configure getline disabling in stage 1
-hook_add preconf 5 "echo am_cv_func_working_getline=yes >> config.cache"
+if ! atstage native; then
+	var_append configcache ' ' 'am_cv_func_working_getline=yes'
+fi
+
 hook_add postmake 5 "mv -v $root/usr/bin/sed $root/bin/sed"