[gitg/gtk3] Use ustar format for distcheck

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 5a210f6a1ede737e7fb090f34af520e58e879b4b
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Thu Jul 21 15:34:30 2011 +0200

    Use ustar format for distcheck

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 1a408c6..db5ca94 100644
--- a/configure.ac
+++ b/configure.ac
@@ -25,7 +25,7 @@ AC_SUBST(GITG_MINOR_VERSION, gitg_minor_version)
 AC_DEFINE(GITG_MICRO_VERSION, gitg_micro_version, [GitG micro version])
 AC_SUBST(GITG_MICRO_VERSION, gitg_micro_version)
 
-AM_INIT_AUTOMAKE([1.11 dist-bzip2 no-dist-gzip])
+AM_INIT_AUTOMAKE([1.11 tar-ustar dist-xz no-dist-gzip -Wno-portability])
 AM_MAINTAINER_MODE([enable])
 
 AM_SILENT_RULES([yes])