[devhelp] Generate .xz tarballs with ustar format

[Javier Jardón <jjardon src gnome org>]

commit b89476b61be78b535a0c4c444a1e29d5fe4a03dc
Author: Javier Jardón <jjardon gnome org>
Date:   Wed Jun 8 12:22:12 2011 +0100

    Generate .xz tarballs with ustar format

 configure.ac |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index cc752ea..c4b0253 100644
--- a/configure.ac
+++ b/configure.ac
@@ -20,8 +20,9 @@ AC_SUBST(LIBDEVHELP_REVISION)
 AC_CONFIG_HEADERS(config.h)
 AC_CONFIG_SRCDIR(src/dh-main.c)
 AC_CONFIG_MACRO_DIR([m4])
+AC_CONFIG_AUX_DIR([build-aux])
 
-AM_INIT_AUTOMAKE([1.11 foreign no-define -Wall])
+AM_INIT_AUTOMAKE([1.11 -Wall foreign no-define tar-ustar no-dist-gzip dist-xz])
 
 # Support silent build rules, requires at least automake-1.11. Disable
 # by either passing --disable-silent-rules to configure or passing V=1