[evolution] Bump GTK+ requirement to 3.4.

[Matthew Barnes <mbarnes src gnome org>]

commit d38754000b6f143a61bed5a18247bdc01e30e8cd
Author: Matthew Barnes <mbarnes redhat com>
Date:   Wed Aug 22 07:25:11 2012 -0400

    Bump GTK+ requirement to 3.4.
    
    Due to the use of gdk_screen_get_monitor_workarea(), which is only
    available in GDK >= 3.4.
    
    Introduced in commits: 5f0c5122552e19a4989f5961151b52cd72daf047
                           90b80d173ff72c1d4a7a92dd2563b20866eb9ff1

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index f276ac0..3eccc16 100644
--- a/configure.ac
+++ b/configure.ac
@@ -32,7 +32,7 @@ m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
 dnl Required Packages
 m4_define([glib_minimum_version], [2.32.0])
-m4_define([gtk_minimum_version], [3.2.0])
+m4_define([gtk_minimum_version], [3.4.0])
 m4_define([eds_minimum_version], [evo_version])
 m4_define([gtkhtml_minimum_version], [4.5.2])
 m4_define([gnome_desktop_minimum_version], [2.91.3])