[ChangeLog][ActiveQt] Out-of-process ActiveQt controls no longer silently
discards unhandled SEH or C++ exceptions that would otherwise crash the
application. Done to make crashes visible, simplify debugging and enable
automatic crash dump generation through Windows error reporting.

Recommended by Microsoft in
https://msdn.microsoft.com/en-us/library/aa344211.aspx



Change-Id: I76d8872a215551893e2423f412001cb8c404e370
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>