/usr/share/doc/libaccount-plugin-1.0-dev/changelog.Debian.gz is in libaccount-plugin-1.0-dev 0.1.7~+14.04.20140211.2-0ubuntu4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libaccount-plugin-1.0-dev/../gir1.2-accountplugin-1.0/changelog.Debian.gz