Replace public operators operator==(), operator!=() of
QJsonArray to friend methods comparesEqual().
Use QT_CORE_REMOVED_SINCE and removed_api.cpp to get rid of current
comparison methods and replace them with a friend.
Add friend method comparesEqual(QJsonArray, QJsonValue)
to the QJsonArray class, to support comparison between QJsonArray
and QJsonValue elements, see test-case fromToVariantConversions()
Task-number: QTBUG-120300
Change-Id: I8440ca0761bede8551ff792bfa7f22e47b56fa79
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2499de8874