Bug#821831: ca-certificates-mono: unowned files after purge (policy 6.8, 10.8): /etc/mono/certstore/certs/Trust/*.cer and the /etc/mono/certstore/ tree

[Jo Shields]

Mono 4.8 (due early next year) should remove the need for a separate
cert store entirely, so I'm not going to spend much time on this unless
it gets really close to release & is still a problem.