/usr/share/doc/libmecab-dev/changelog.Debian.gz is in libmecab-dev 0.996-1.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libmecab-dev/../libmecab2/changelog.Debian.gz
/usr/share/doc/libmecab-dev/../libmecab2/changelog.Debian.gz