Log Message:
libgit2: Update to 1.0.1

v1.0.1
------

This is a bugfix release with the following changes:

- Calculating information about renamed files during merges is more
  efficient because dissimilarity about files is now being cached and
  no longer needs to be recomputed.

- The `git_worktree_prune_init_options` has been correctly restored for
  backward compatibility.  In v1.0 it was incorrectly deprecated with a
  typo.

- The optional ntlmclient dependency now supports NetBSD.

- A bug where attempting to stash on a bare repository may have failed
  has been fixed.

- Configuration files that are unreadable due to permissions are now
  silently ignored, and treated as if they do not exist.  This matches
  git's behavior; previously this case would have been an error.

- v4 index files are now correctly written; previously we would read
  them correctly but would not write the prefix-compression accurately,
  causing corruption.

- A bug where the smart HTTP transport could not read large data packets
  has been fixed.  Previously, fetching from servers like Gerrit, that
  sent large data packets, would error.