Implementation for the R6RS (rnrs sorting) library.

* module/Makefile.am: Add rnrs/6/sorting.scm to RNRS_SOURCES.
* module/rnrs/6/sorting.scm: New file.

module/Makefile.am

@@ -263,6 +263,7 @@ RNRS_SOURCES =					\
   rnrs/6/hashtables.scm				\
   rnrs/6/lists.scm				\
   rnrs/6/programs.scm				\
+  rnrs/6/sorting.scm				\
   rnrs/6/syntax-case.scm			\
   rnrs/6/unicode.scm				\
   rnrs/arithmetic/6/bitwise.scm			\

module/rnrs/6/sorting.scm

@@ -0,0 +1,27 @@
+;;; sorting.scm --- The R6RS sorting library
+
+;;      Copyright (C) 2010 Free Software Foundation, Inc.
+;;
+;; This library is free software; you can redistribute it and/or
+;; modify it under the terms of the GNU Lesser General Public
+;; License as published by the Free Software Foundation; either
+;; version 3 of the License, or (at your option) any later version.
+;; 
+;; This library is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;; Lesser General Public License for more details.
+;; 
+;; You should have received a copy of the GNU Lesser General Public
+;; License along with this library; if not, write to the Free Software
+;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+
+(library (rnrs sorting (6))
+  (export list-sort vector-sort vector-sort!)
+  (import (rnrs base (6))
+          (only (guile) *unspecified* stable-sort sort!))
+
+  (define (list-sort proc list) (stable-sort list proc))
+  (define (vector-sort proc vector) (stable-sort vector proc))
+  (define (vector-sort! proc vector) (sort! vector proc) *unspecified*))