[gnome-system-monitor] Bump Gtk+ dependency to 3.9.5

[Robert Roth <robertroth src gnome org>]

commit f8c97b19e8244f0c9eaee7905db2e2a48ef59ce6
Author: Andreas Henriksson <andreas fatal se>
Date:   Thu Aug 8 00:13:12 2013 +0200

    Bump Gtk+ dependency to 3.9.5
    
    This is needed because of:
    commit 1d2e60ad778d82247fb93619f037e454a9f1d773
    Port to GtkStack and GtkHeaderBar
    
    https://bugzilla.gnome.org/show_bug.cgi?id=705646

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index e84c51b..9d81695 100644
--- a/configure.ac
+++ b/configure.ac
@@ -30,7 +30,7 @@ LT_INIT
 GLIB_REQUIRED=2.28.0
 LIBWNCK_REQUIRED=2.91.0
 LIBGTOP_REQUIRED=2.28.2
-GTK_REQUIRED=3.5.12
+GTK_REQUIRED=3.9.5
 GNOME_ICON_THEME_REQUIRED=2.31
 GTKMM_REQUIRED=3.3.18
 GIOMM_REQUIRED=2.27