[gnome-ostree] Add harfbuzz, necessary for Pango master

[Colin Walters <walters src gnome org>]

commit e78619191ce2266bdf155b5e58bf74f6f258868a
Author: Colin Walters <walters verbum org>
Date:   Sun Aug 19 15:17:03 2012 -0400

    Add harfbuzz, necessary for Pango master

 gnomeos-3.6.json |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gnomeos-3.6.json b/gnomeos-3.6.json
index 998c02e..cc17269 100644
--- a/gnomeos-3.6.json
+++ b/gnomeos-3.6.json
@@ -491,6 +491,8 @@
 		                 "--disable-gtk",
 				 "--disable-documentation"]},
 
+                {"src": "git:git://anongit.freedesktop.org/harfbuzz"},
+
 		{"src": "gnome:pango"},
 
 		{"src": "gnome:atk"},