[libxml2] configure.ac: produce tar.xz only (GNOME policy)

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 5ccdfa43ffd15b356aea67a9166350a7f8cba3eb
Author: David Seifert <soap gentoo org>
Date:   Sat Apr 2 16:54:30 2022 +0200

    configure.ac: produce tar.xz only (GNOME policy)
    
    * This is part of a policy from 2011:
      https://mail.gnome.org/archives/distributor-list/2011-September/msg00000.html

 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/configure.ac b/configure.ac
index 4c08c5f1..667eee9e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -40,7 +40,7 @@ AC_SUBST(LIBXML_VERSION_EXTRA)
 
 VERSION=${LIBXML_VERSION}
 
-AM_INIT_AUTOMAKE([1.15 foreign])
+AM_INIT_AUTOMAKE([1.15 foreign no-dist-gzip dist-xz])
 AM_SILENT_RULES([yes])
 
 dnl Checks for programs.