[gtk-osx] Update jhbuild version to latest stable

[John Ralls <jralls src gnome org>]

commit 504292ed8af8c0d507becd5d5eebc4844f1bb7a4
Author: John Ralls <jralls ceridwen us>
Date:   Tue May 14 08:35:05 2013 -0700

    Update jhbuild version to latest stable

 jhbuild-revision |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/jhbuild-revision b/jhbuild-revision
index fb3a067..dc15918 100644
--- a/jhbuild-revision
+++ b/jhbuild-revision
@@ -1 +1 @@
-2.32.4
+2.34.0