[gtkglext] Require autoconf-2.63. Require automake-1.11. Let make dist produce xz-compressed tarballs.

[Ralf Corsépius <rcorsepius src gnome org>]

commit 0c0f51527c790a741330b9d876daf77c97f12181
Author: Ralf Corsepius <rcorsepius src gnome org>
Date:   Tue Dec 22 16:28:19 2009 +0100

    Require autoconf-2.63.
    Require automake-1.11.
    Let make dist produce xz-compressed tarballs.

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index b173306..8e3cdb7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -43,7 +43,7 @@ m4_define([gtkglext_debug_default],
 AC_INIT([gtkglext], [gtkglext_version],
         [gtkglext-list gnome org])
 
-AC_PREREQ([2.58])
+AC_PREREQ([2.63])
 
 AC_CONFIG_SRCDIR([gdk/gdkgl.h])
 AC_CONFIG_MACRO_DIR([m4macros])
@@ -52,7 +52,7 @@ AC_CONFIG_MACRO_DIR([m4macros])
 cflags_set=${CFLAGS+set}
 
 # Initialize automake stuff
-AM_INIT_AUTOMAKE([1.7 no-define dist-bzip2 dist-zip])
+AM_INIT_AUTOMAKE([1.11 no-define dist-bzip2 dist-zip dist-xz])
 
 # Specify a configuration file
 AM_CONFIG_HEADER([config.h])