Bug#1004678: git-lfs: allow offline operation

[Barak A. Pearlmutter]

I will file an issue upstream. But I don't expect them to care,
because github (the company) probably views this issue as a feature,
not a bug. This issue ties people to a single central repository and
makes migration nearly impossible, at least for non-wizards. Which is
basically their business model: come for the issue tracker and repo
sharing, stay because you have no choice, you can't leave, you can't
even commit without connecting.