/usr/share/doc/libpengine4-dev/changelog.Debian.gz is in libpengine4-dev 1.1.10+git20130802-1ubuntu2.4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libpengine4-dev/../libpengine4/changelog.Debian.gz