Use dist-xz for tarballs
diff --git a/configure.ac b/configure.ac
index 2589e93..22ed82d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7,7 +7,7 @@
 
 AC_CONFIG_HEADERS([config.h])
 
-AM_INIT_AUTOMAKE([1.11 foreign dist-bzip2])
+AM_INIT_AUTOMAKE([1.11 foreign no-dist-gzip dist-xz])
 
 AM_SILENT_RULES([yes])