[librsvg/librsvg-2.40] Create a .tar.xz tarball, like it's 2017

[Federico Mena Quintero <federico src gnome org>]

commit f3219f124113c4973bbf09a4d14e81e5ebc8975c
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed Jul 19 20:15:54 2017 -0500

    Create a .tar.xz tarball, like it's 2017

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index d442fbf..d2bcdcb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -11,7 +11,7 @@ AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_SRCDIR([rsvg.h])
 AC_CONFIG_MACRO_DIR([m4])
 
-AM_INIT_AUTOMAKE([1.9 foreign no-dist-gzip dist-bzip2])
+AM_INIT_AUTOMAKE([1.9 foreign no-dist-gzip dist-xz])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
 AM_MAINTAINER_MODE([enable])