[Development] 5.7/5.8 gives unusable static ltcg x86 builds on MSVC 2015/2017

[Kuba Ober]

> 18 apr. 2017 kl. 04:37 skrev Mikkel Krautz <mikkel at krautz.dk>:
> 
> MSVC 2015 has buggy magic statics, see
> https://bugreports.qt.io/browse/QTBUG-58318 and
> https://connect.microsoft.com/VisualStudio/feedback/details/3121209
> 
> I worked around the issue by disabling them with -Zc:threadSafeInit-.

Wow, thank you! I've definitely hit the snag related to the shortcuts. I'll see if this option fixes it and will report back ASAP.

Cheers, Kuba

(Why didn't I find the bug report I can't fathom - I did search for these keywords)