/usr/share/doc/libegl1-mesa-drivers-lts-quantal/changelog.Debian.gz is in libegl1-mesa-drivers-lts-quantal 9.0.3-0ubuntu0.1~precise3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libegl1-mesa-drivers-lts-quantal/../libgl1-mesa-dri-lts-quantal/changelog.Debian.gz