[krb5-auth-dialog] Switch build default to GTK+ 3.0

[Guido Günther <guidog src gnome org>]

commit 2f6eaf384d526ed39c3ae2ae819f45aeb4389cb1
Author: Guido Günther <agx sigxcpu org>
Date:   Mon Feb 14 08:32:11 2011 +0100

    Switch build default to GTK+ 3.0

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 23724ab..af77fd5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -29,12 +29,12 @@ GNOME_DOC_INIT
 
 AC_MSG_CHECKING([which gtk+ version to compile against])
 AC_ARG_WITH([gtk],
-  [AS_HELP_STRING([--with-gtk=2.0|3.0],[which gtk+ version to compile against (default: 2.0)])],
+  [AS_HELP_STRING([--with-gtk=2.0|3.0],[which gtk+ version to compile against (default: 3.0)])],
   [case "$with_gtk" in
      2.0|3.0) ;;
      *) AC_MSG_ERROR([invalid gtk version specified]) ;;
    esac],
-  [with_gtk=2.0])
+  [with_gtk=3.0])
 AC_MSG_RESULT([$with_gtk])
 
 case "$with_gtk" in