[gtk-osx] Use the latest stable release of jhbuild.

[John Ralls <jralls src gnome org>]

commit 9f5fc63c514369f9a44973149daaedb0505026ae
Author: John Ralls <jralls ceridwen us>
Date:   Sun Nov 4 13:38:26 2012 -0800

    Use the latest stable release of jhbuild.

 jhbuild-revision |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/jhbuild-revision b/jhbuild-revision
index fb3a067..1809198 100644
--- a/jhbuild-revision
+++ b/jhbuild-revision
@@ -1 +1 @@
-2.32.4
+3.4.0