[pygobject] Switch tarball compression format to tar.xz only.

[John Palmieri <johnp src gnome org>]

commit 6f380153afb3390f7da9f4b8befb1c4ee224da17
Author: Dieter Verfaillie <dieterv optionexplicit be>
Date:   Mon Sep 12 21:07:20 2011 +0200

    Switch tarball compression format to tar.xz only.
    
    See http://mail.gnome.org/archives/gnome-announce-list/2011-September/msg00031.html
    for more information.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=659140

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 55df65b..4719176 100644
--- a/configure.ac
+++ b/configure.ac
@@ -37,7 +37,7 @@ AC_SUBST(PYGOBJECT_MICRO_VERSION, pygobject_micro_version)
 
 AM_CONFIG_HEADER(config.h)
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES(yes)])
-AM_INIT_AUTOMAKE(foreign)
+AM_INIT_AUTOMAKE([1.11 foreign no-dist-gzip dist-xz])
 AM_MAINTAINER_MODE([enable])
 
 dnl put the ACLOCAL flags in the makefile