[OE-core] host-user-contaminated QA check

[Seebs]

On Thu, 02 Feb 2017 20:43:49 +0100
Patrick Ohly <patrick.ohly at intel.com> wrote:

> One could argue that an implicit "created during build -> owned by
> root" follows the same logic. But as the check as it is now did find
> a real issue and also others in the past (the pseudo bugs that Chris
> mentioned), let's keep it.

I am somewhat inclined to change pseudo's default to "if there's no
entry, report something definitely invalid", or make that an available
option, because that would avoid false positives, and allow a more
rigorous QA check.

-s