[Interest] Support of russian language in QJson-classes

[Dmitrii Volosnykh]

I thought they are interchangeable because both of them use
qt_assert(_x) method which finally calls qFatal(). So, when condition
is false, eigher of them should abort the program's execution. The
difference you are talking about should probably come from
Q_ASSUME_IMPL(). I was not aware of that, thanks for these
clarifications.