sys_siglist, and friends. Problem reported by Toney Leneis in
<http://mail.gnu.org/archive/html/bug-coreutils/2004-02/msg00136.html>.
+2004-02-25 Paul Eggert <eggert@twinsun.com>
+
+ * tests/du/deref-args, tests/du/exclude, tests/du/slash:
+ * tests/du/trailing-slash: Run envvar-check in case BLOCK_SIZE
+ etc. are set.
+
2004-02-23 Jim Meyering <jim@meyering.net>
* src/seq.c (usage): Remove stray space after \n in --help output.