getfile on windows: when a file cannot be symlinked for privilege reasons, copy it #159
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Symlinking allows to optimize the space taken by go-get in case the operation runs locally.
But running the go getter without the symlinking privilege can fail in this case.
This will copy the file instead of symlinking it in case we don't have the priviledge, so that the go-get doesn't fail.
closes #39
related: hashicorp/nomad#3491
This could also be an option passed to the client ? That we could turn on/off.