libgit2/libgit2 — pull request #1817 by nulltoken (2013-08-30 19:31:03+00:00)
Title: Of backends and refreshers...

- 7b66db4 makes sure that a backend without refreshing capabilities isn't spammed when an object cannot be found in any backend
- fe4477b only purpose is to ease the review of the next commit diff
- da38a85 makes the backend responsible for internally handling any potential refresh logic. It also takes care of modifying the pack backend accordingly