Symlinks appear to be created targeting real path, they shouldn't be

[metov]

If the symlink target is another symlink, this gets resolved and the real physical location is used instead. I think this is surprising behavior. Instead, the symlink target should be minimally modified.

• Resolve ~ because otherwise it would make dotstree unsuable
• Definitely do not resolve symlinks
• Maybe don't even do absolute paths, to allow linking between sibling specs