[libxml2/2.9] configure.ac: produce tar.xz only (GNOME policy)

[Nick Wellnhofer <nwellnhof src gnome org>]

commit be0f6eccf164c6bf90db6921c5b353cf18368a7f
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 46faa236..b2a63acd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -40,7 +40,7 @@ AC_SUBST(LIBXML_VERSION_EXTRA)
 
 VERSION=${LIBXML_VERSION}
 
-AM_INIT_AUTOMAKE([foreign])
+AM_INIT_AUTOMAKE([foreign no-dist-gzip dist-xz])
 
 # Support silent build rules, requires at least automake-1.11. Disable
 # by either passing --disable-silent-rules to configure or passing V=1