When converting gen 2 to gen 3 repositories, the current options are in-place conversion, hard links, or absolute symbolic links. There are cases (e.g., Git repositories) where links are desirable but neither hard links nor absolute paths are portable enough. A "relsymlink" mode would be useful for these cases.

Because it's intended only for when very specific behavior is desired, "relsymlink" probably does not make sense as an option in either the "auto" or "link" transfer modes.