/usr/share/doc/libglew-dev/changelog.Debian.gz is in libglew-dev 1.13.0-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libglew-dev/../libglew1.13/changelog.Debian.gz
/usr/share/doc/libglew-dev/../libglew1.13/changelog.Debian.gz