For some time, we've assumed that the URL specification had a mistake in
that it didn't allow the "#" character to appear decoded in the
fragment. We've gotten away with it so far.
However, turns out that the CoreFoundation NSURL class doesn't like it.
So we have to be stricter.
[ChangeLog][Important Behavior Changes][QUrl and QUrlQuery] QUrl no
longer decodes %23 found in the fragment to "#" in the output of
toString(QUrl::FullyEncoded) or toEncoded()
Task-number: QTBUG-31945
Change-Id: If5e0fb37bae84710986c9ca89bd69ec98437cd63
Reviewed-by: David Faure (KDE) <faure@kde.org>