sde-config: Introduced lib/sde-config.in providing config_list() to the tools

lib/sde-config.in

@@ -0,0 +1,18 @@
+# --- SDE-COPYRIGHT-NOTE-BEGIN ---
+# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
+#
+# Filename: lib/sde-config.in
+# Copyright (C) 2008 The OpenSDE Project
+#
+# More information can be found in the files COPYING and README.
+#
+# This program is free software; you can redistribute it and/or modify
+# 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.
+# --- SDE-COPYRIGHT-NOTE-END ---
+
+config_list()
+{
+	ls -1d "$SDEROOT/config"/* 2> /dev/null | sed -e 's,.*/,,'
+}