su: remove program (util-linux is now the best source for it)

* README: Omit "su" from list of programs.
* src/su.c: Remove file.
* src/Makefile.am: Remove su-related rules and variables.
* tests/misc/su-fail: Remove test.
* tests/Makefile.am (TESTS): Remove misc/su-fail.
* tests/misc/invalid-opt: Remove su-related code.
* src/.gitignore: Remove su.
* man/su.x: Remove file.
* man/Makefile.am (su.1): Remove rule.
* po/POTFILES.in: Remove su.c from the list.
* TODO: Remove ancient entry.
* NEWS (Changes in behavior): Mention it.
* doc/coreutils.texi: Remove su-related description.
* AUTHORS: Remove su.
* m4/lib-check.m4 (cu_LIB_CHECK): Remove file/macro.
* configure.ac: Remove su-related code and sole use of cu_LIB_CHECK.
* scripts/git-hooks/commit-msg: Remove su from this list, too.

4 files changed, 0 insertions, 33 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 0bafc5fc4..d8bc93020 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -280,7 +280,6 @@ TESTS =						\
   misc/stty-invalid				\
   misc/stty-pairs				\
   misc/stty-row-col				\
-  misc/su-fail					\
   misc/sum					\
   misc/sum-sysv					\
   misc/tac					\
diff --git a/tests/misc/help-version b/tests/misc/help-version
index 7416062fa..e19f5b1c0 100755
--- a/tests/misc/help-version
+++ b/tests/misc/help-version
@@ -208,7 +208,6 @@ nohup_setup () { args=--version; }
 printf_setup () { args=foo; }
 seq_setup () { args=10; }
 sleep_setup () { args=0; }
-su_setup () { args=--version; }
 stdbuf_setup () { args="-oL true"; }
 timeout_setup () { args=--version; }
 
diff --git a/tests/misc/invalid-opt b/tests/misc/invalid-opt
index 8eae3c275..8f7024c6f 100755
--- a/tests/misc/invalid-opt
+++ b/tests/misc/invalid-opt
@@ -36,7 +36,6 @@ my %exit_status =
     nohup => 125,
     sort => 2,
     stdbuf => 125,
-    su => 125,
     test => 0,
     timeout => 125,
     true => 0,
diff --git a/tests/misc/su-fail b/tests/misc/su-fail
deleted file mode 100755
index c2e0475d2..000000000
--- a/tests/misc/su-fail
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/bin/sh
-# Test su failure cases
-
-# Copyright (C) 2009-2012 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_ su
-
-require_built_ su
-
-# Very little that we can test without a root password
-su --- / true # unknown option
-test $? = 125 || fail=1
-su no_such_user
-test $? = 125 || fail=1
-
-Exit $fail