/usr/share/doc/libjana0-dbg/changelog.Debian.gz is in libjana0-dbg 0.0.0+git20091215.9ec1da8a-3build4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libjana0-dbg/../libjana0/changelog.Debian.gz