[gcr] Build a tar.xz, not a tar.gz

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 2b5ee64944e8649697866350f57727095d161fe9
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Tue May 12 09:50:01 2015 -0500

    Build a tar.xz, not a tar.gz
    
    It's currently being converted by the GNOME release scripts.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index b528f0f..7913742 100644
--- a/configure.ac
+++ b/configure.ac
@@ -52,7 +52,7 @@ dnl ****************************************************************************
 
 AC_CONFIG_MACRO_DIR([build/m4])
 AC_CONFIG_AUX_DIR([build])
-AM_INIT_AUTOMAKE([1.11 tar-ustar foreign -Wno-portability subdir-objects])
+AM_INIT_AUTOMAKE([1.11 no-dist-gzip dist-xz tar-ustar foreign -Wno-portability subdir-objects])
 AM_SANITY_CHECK
 AC_CONFIG_HEADERS(config.h)
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])