It seems that qmake does not pass /FS to the compiler causing compile
errors in parallel builds. In theory we could still compile examples
with cmake, but there seems to fine-grained configuration for that.
Change-Id: Ia3954cee61e842f029ac0033ee895c39b8b91b04
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>