Sync with the qtbase/header.XXX. The license headers were matching
qtbase/header.XXX-OLD, which makes qtqa/tst_license flood warnings:
Old license being used for foo.qdoc
Change-Id: I199bf303a2d648e0d5f7bc01cb0814a5f945eeff
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>