This is a short step on the road to HTTP body format agnostic support. And it's
not a pretty step, either.

It now lives on its own in http://github.com/square/tape/

Now located at https://github.com/square/seismic.

* Reintroduce shake detection as its own module.
* Move YAFFS-specific directory sync to its own module.
* Focus HTTP and I/O modules.
* Queue module for `QueueFile` and future queue-related stuff.

* Move `AndroidMainThread` to 'http' module. The Android dependency is marked as optional (though it is already provided scope).
* Remove `ShakeDetector` as it is not topical for this library.

Serialization fix in Gson is here:
http://code.google.com/p/google-gson/source/detail?r=1177

This change is *extremely* backwards and forwards incompatible
because it replaces Guice's @Named with JSR-330's @Named.
Programs that use the wrong @Named will not work at all. For
this reason it's critical that clients of retrofit also change
their @Named in sync with this update.

The main benefit of this update is that it fixes a DoS vulnerability.
The benefit I'm interested in TypeAdapter.toJsonTree and fromJsonTree.

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