Updated openstack/openstack
Project: openstack/python-swiftclient  070dd48c315b63e9ba75fc1020922222c985b194
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Copy Swift's .mailmap to swiftclient repo

We had this before when swiftclient was in Swift's source tree, but it
didn't get copied over in the client extraction.

Change-Id: I218edcee265143164ea338e7ea95c19e72579925