[gtk+] Change required glib version from "2.28" to "2.28.0"

[Carlos Garnacho <carlosg src gnome org>]

commit e1dbc871fee564b31c9d1ad309687f9228f6c3c3
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Feb 9 20:08:35 2011 +0100

    Change required glib version from "2.28" to "2.28.0"
    
    Fixes the recent configure error:
      checking for GLIB - version >= 2.28... 2.28, bad version string
    
    introduced by 95446c311

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index fde3779..d806f32 100644
--- a/configure.ac
+++ b/configure.ac
@@ -38,7 +38,7 @@ AC_CONFIG_MACRO_DIR([m4])
 m4_define([gtk_binary_version], [3.0.0])
 
 # required versions of other packages
-m4_define([glib_required_version], [2.28])
+m4_define([glib_required_version], [2.28.0])
 m4_define([pango_required_version], [1.20])
 m4_define([atk_required_version], [1.30])
 m4_define([cairo_required_version], [1.10.0])