/usr/lib/libvirt-gconfig-1.0.so is in libvirt-glib-1.0-dev 0.1.6-1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libvirt-gconfig-1.0.so.0.1.6
/usr/lib/libvirt-gconfig-1.0.so.0.1.6