index: associate directory indexes with their dir, not their parent
index: associate directory indexes with their dir, not their parent

Objects named with a trailing / are assumed to be directory indexes,
just like index.html. To support generating these indexes the Object
(if it exists) should be associated with its Directory.

quantum/coreos-mantle,glevand/coreos--mantle,mjg59/mantle,glevand/coreos--mantle,mjg59/mantle,dm0-/mantle,quantum/coreos-mantle,marineam/mantle,marineam/mantle,dm0-/mantle