[Bug 51985] errors significance

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51985

--- Comment #5 from Didier  ---
(In reply to Didier from comment #3)
> It's not always possible to tell what went wrong from the log alone.

That's why I propose to add Fatal tag to the logs.
As the others softwares do.
A program is always able to tell what causes abort.
Just ask to the exception handler, for instance.