feat(multiple block post): Swift and Disk

Deuce:
    POST v1/{vaultname}/blocks
        -Request body : msgpacked content of
                        dictionary of blockid
                        and blockdata
Swift:
    Asynchronous multiple block post
    py27 - gevent
    py33,34 - aiohttp and asyncio
            - lacks exception handling
Disk:
    Reference Driver
    Synchronous multiple block post
See https://github.com/rackerlabs/deuce/pull/89/files#r16544412

Why do that if you're just going to rename it here? Why not just leave the names intact so you have deuce.drivers.swift2k.storagedriver.SwiftStorageDriver instead of deuce.drivers.swift2k.py2_swiftstoragedriver.PY2_SwiftStorageDriver?

If it's just planning ahead for py2 vs pypy, then do deuce.drivers.swift2k.py2.swiftstoragedriver.SwiftStorageDriver and deuce.drivers.swift2k.pypy.swiftstoragedriver.SwiftStorageDriver. For that matter, you could just do deuce.drivers.swift.swiftstoragedriver.py2.SwiftStorageDriver and deuce.drivers.swift.swiftstoragedriver.py3.SwiftStorageDriver now, and then add deuce.drivers.swift.swiftstoragedriver.pypy.SwiftStorageDriver later.

Just trying to figure out the need for renaming the files, etc.