[gtranslator] Bump gtk+ dependency to 2.22

[Jonh Wendell <jwendell src gnome org>]

commit c795bc327f3cce281a957bc9779e3a3f2e4913b8
Author: Jonh Wendell <jwendell gnome org>
Date:   Mon Aug 16 10:15:21 2010 -0300

    Bump gtk+ dependency to 2.22

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 4c9f8c5..dcc0f3f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -72,7 +72,7 @@ dnl
 dnl ==========================================================================
 
 GTHREAD_REQUIRED=2.13.0
-GTK_REQUIRED=2.18.0
+GTK_REQUIRED=2.21.5
 GLIB_REQUIRED=2.15.5
 GCONF_REQUIRED=2.18.0
 LIBXML_REQUIRED=2.4.12