Those sections contain more than one components of a URL, separated by
delimiters. For that reason, QUrl::FullyDecoded and QUrl::DecodedMode do
not make sense, since they would cause the returned value to be
ambiguous and/or fail to parse again.
In fact, there was a comment in the test saying "look how it becomes
ambiguous".
Those modes are already forbidden in the setters and getters of the full
URL (setUrl(), url(), toString() and toEncoded()).
[ChangeLog][Important Behavior Changes][QUrl and QUrlQuery] QUrl no
longer supports QUrl::FullyDecoded mode in authority() and userInfo(),
nor QUrl::DecodedMode in setAuthority() and setUserInfo().
Change-Id: I538f7981a9f5a09f07d3879d31ccf6f0c8bfd940
Reviewed-by: David Faure (KDE) <faure@kde.org>