the code meant to make symlinks relative to the output directory, but
only actually succeeded at it for targets in the root of the output
directory; since we already check that the target is not breaking out of
the instance, we can generate the output symlink relative to itself and
fix the subdirred-symlink behavior
Signed-off-by: Brian S. Stephan <bss@incorporeal.org>
Brian S. Stephan
88b678931e
