veyron2/storage: Remove overlapping Stat and Entry types.
The veyron2/storage api provided slightly more Go-ish versions
of the Stat and Entry types than veyron2/services/store.
Unfortunately, these small differences required lots of code
to convert back and forth between the two.
This is the first step in simplifying the store client library.
Suprisingly, it required significant changes to the server.
Next step is to replace the transaction model in veyron2/storage.
I also plan to remove veyron/services/store/server/... if I can.
Change-Id: I9af75636be39748de7cf9bf040a437b34bd10c47
8 files changed
