Fixed registry libfile (tags -> sha)

library/registry

@@ -1,6 +1,6 @@
 # maintainer: Sam Alba <[email protected]> (@samalba)
 
-latest: git://github.com/dotcloud/docker-registry@0.6.7
-0.6.5: git://github.com/dotcloud/docker-registry@0.6.5
-0.6.6: git://github.com/dotcloud/docker-registry@0.6.6
-0.6.7: git://github.com/dotcloud/docker-registry@0.6.7
+latest: git://github.com/dotcloud/docker-registry@abea91b858d5ddfbfdd5701c2fd7faa6798d60bd
+0.6.5: git://github.com/dotcloud/docker-registry@b912de08ef936b0efb4e8ce15e16d13f055c599c
+0.6.6: git://github.com/dotcloud/docker-registry@570c35b7c624e7c3d7a76333231ad4893df57b79
+0.6.7: git://github.com/dotcloud/docker-registry@abea91b858d5ddfbfdd5701c2fd7faa6798d60bd