* "git filter-branch" incorrectly tried to update a nonexistent work tree
at the end when it is run in a bare repository.
+* "git gc" did not work if your repository was created with an ancient git
+ and never had any pack files in it before.
* "git mergetool" used to ignore autocrlf and other attributes
echo O=$(git describe master)
git shortlog --no-merges $O..master ^maint