Infinite loop when symlink refers to parent dir

[jefdaj]

For me goes about 35 levels deep and then gives an IO error:

readDirectoryWithL return "/usr/bin/X11"

I hacked it for my specific use case by treating any symlink that doesn't point to a git-annex repo as a file, but I haven't thought of a solution that would be useful to others.

Also thanks for making this module! I've been using it pretty heavily and this is the first error.