ripple/fossil: implement a more lightweight blob store backend

The sled chunk store works fine, but has pretty awful performance,
since sled just doesn't make a particularly good large blob store.

This change replaces it with a file-based store using sled purely as a
metadata store.

Adding LLVM's source tree takes about 120s before, and about 15s after.

Change-Id: I5fb22ea79a006fa6bcf5351921038f57f2484112

0 files changed, 0 insertions, 0 deletions