[PATCH] build: update gnulib to latest - to avoid du(1) crash on XFS

[Bernhard Voelker]

Pull in a fix for FTS to avoid a crash when traversing a heavily
changed XFS file system:

> fts: remove NOSTAT_LEAF_OPTIMIZATION

* NEWS (Bug fixes): Mention the fix.
* gnulib: Update to latest.
* bootstrap: Sync from gnulib/build-aux/bootstrap.

Discussed at:
<https://lists.gnu.org/r/bug-gnulib/2020-04/msg00068.html>
---
 NEWS      | 4 ++++
 bootstrap | 4 ++--
 gnulib    | 2 +-
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/NEWS b/NEWS
index b8a17c276..24179360c 100644
--- a/NEWS
+++ b/NEWS
@@ -9,6 +9,10 @@ GNU coreutils NEWS                                    -*- 
outline -*-
   is a non regular file.
   [bug introduced in coreutils-8.6]
 
+  du no longer crashes on XFS file systems when the directory hierarchy is
+  heavily changed during the run.
+  [bug introduced in coreutils-8.25]
+
 ** Changes in behavior
 
   On GNU/Linux systems, ls no longer issues an error message on
diff --git a/bootstrap b/bootstrap
index 70fd73cc7..8f76d6962 100755
--- a/bootstrap
+++ b/bootstrap
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Print a version string.
-scriptversion=2019-01-04.17; # UTC
+scriptversion=2020-04-13.15; # UTC
 
 # Bootstrap this package from checked-out sources.
 
@@ -970,7 +970,7 @@ bootstrap_post_import_hook \
 # Uninitialized submodules are listed with an initial dash.
 if $use_git && git submodule | grep '^-' >/dev/null; then
   die "some git submodules are not initialized. "     \
-      "Run 'git submodule init' and bootstrap again."
+      "Run 'git submodule update --init' and bootstrap again."
 fi
 
 # Remove any dangling symlink matching "*.m4" or "*.[ch]" in some
diff --git a/gnulib b/gnulib
index 88776ceb6..5cdec0ff5 160000
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit 88776ceb6f7a888e2ee6ccf81958a90ec1cee3c2
+Subproject commit 5cdec0ff5ecf34474d90d8b57f50a148449cda0c
-- 
2.26.1