tests: add a test to exercise today's ls-lL-vs-ACL bug

* tests/ls/slink-acl: New file.
* tests/Makefile.am (TESTS): Add it.
* tests/init.cfg (require_setfacl_): New function.
* gnulib: Update to latest, for file-has-acl changes.
* NEWS (Bug fixes): Mention it.
See http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/28538.  This
":>k; setfacl -m m::r k; ln -s k s; ls -Log s" should print e.g.,
    -rw-r-----+ 1 0 Oct  5 19:22 s
With the ls from coreutils-8.13, it would print this (with "." or
nothing in place of the "+"):
    -rw-r-----. 1 0 Oct  5 19:22 s

NEWS

@@ -10,6 +10,9 @@ GNU coreutils NEWS                                    -*- outline -*-
   dangling symlinks when an 'ln=target' entry is in $LS_COLORS.
   [bug introduced in fileutils-4.0]
 
+  ls -lL symlink once again properly prints "+" when the referent has an ACL.
+  [bug introduced in coreutils-8.13]
+
 ** Improvements
 
   md5sum --check now supports the -r format from the corresponding BSD tool.

gnulib

@@ -1 +1 @@
-Subproject commit 244794a7887f13d9cdb91fed96932cc479905b96
+Subproject commit d813b688732c3a0da947f91cbb19cb78a627209e

tests/Makefile.am

@@ -431,6 +431,7 @@ TESTS =						\
   ls/readdir-mountpoint-inode			\
   ls/recursive					\
   ls/rt-1					\
+  ls/slink-acl					\
   ls/stat-dtype					\
   ls/stat-failed				\
   ls/stat-free-color				\

tests/init.cfg

@@ -130,6 +130,12 @@ require_strace_()
     skip_ 'strace -qe "'"$1"'" does not work'
 }
 
+require_setfacl_()
+{
+  setfacl -m user::rwx . \
+    || skip_ "setfacl does not work on the current file system"
+}
+
 # Require a controlling input `terminal'.
 require_controlling_input_terminal_()
 {

tests/ls/slink-acl

@@ -0,0 +1,33 @@
+#!/bin/sh
+# verify that ls -lL works when applied to a symlink to an ACL'd file
+
+# Copyright (C) 2011 Free Software Foundation, Inc.
+
+# 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, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program 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 General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+print_ver_ ls
+
+require_setfacl_
+
+touch k || framework_failure_
+setfacl -m m::r k || framework_failure_
+ln -s k s || framework_failure_
+
+set _ $(ls -Log s); shift; link=$1
+set _ $(ls -og k);  shift; reg=$1
+
+test "$link" = "$reg" || fail=1
+
+Exit $fail