[gtkglext] Require Autoconf 2.58. (Requiring 2.63 is probably not necessary.)

[Braden McDaniel <bradenmcd src gnome org>]

commit 357b6e5aa2ae1c81c2032b40cf0d6fe42299a9f1
Author: Braden McDaniel <braden bolt endoframe net>
Date:   Mon Dec 7 23:49:07 2009 -0500

    Require Autoconf 2.58.  (Requiring 2.63 is probably not necessary.)

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 65fb73f..cf6251a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -82,7 +82,7 @@ m4_define([atk_required_version], [1.28.0])
 AC_INIT([gtkglext], [gtkglext_version],
         [gtkglext-list gnome org])
 
-AC_PREREQ([2.63])
+AC_PREREQ([2.58])
 
 AC_CONFIG_SRCDIR([gdk/gdkgl.h])
 AC_CONFIG_MACRO_DIR([m4macros])