update autotools files with autoreconf to fix FTBFS (#2000426)

gettext.spec

@@ -4,7 +4,7 @@
 Summary: GNU libraries and utilities for producing multi-lingual messages
 Name: gettext
 Version: 0.21
-Release: 8%{?dist}
+Release: 9%{?dist}
 # The following are licensed under LGPLv2+:
 # - libintl and its headers
 # - libasprintf and its headers
@@ -161,6 +161,9 @@ think about.
 
 %prep
 %autosetup -S git
+# Refresh autotools files to latest versions
+# Should be removed after 0.21:
+autoreconf --force
 
 # Defeat libtextstyle attempt to bundle libxml2.  The comments
 # indicate this is done because the libtextstyle authors do not want
@@ -371,6 +374,9 @@ make check LIBUNISTRING=-lunistring
 %{_mandir}/man1/msghack.1*
 
 %changelog
+* Tue Nov 23 2021 Jens Petersen <petersen@redhat.com> - 0.21-9
+- update autotools files with autoreconf to fix FTBFS (#2000426)
+
 * Thu Jul 22 2021 Fedora Release Engineering <releng@fedoraproject.org> - 0.21-8
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild