/usr/share/doc/libglade2.0-cil-dev/changelog.Debian.gz is in libglade2.0-cil-dev 2.12.40-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libglade2.0-cil-dev/../libglib2.0-cil/changelog.Debian.gz