/usr/share/doc/libslurmdb29-dbg/changelog.Debian.gz is in libslurmdb29-dbg 15.08.7-1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libslurmdb29-dbg/../libslurmdb29/changelog.Debian.gz