Merging features in Qt 5.0 epic

Quite some effort goes into Qt 5.0 in order to push into Qt some of the features which should be in Qt and not in KDE Frameworks. Usually because all Qt apps would benefit from them even outside the KDE world, and because this cuts dependencies between the KDE frameworks.

Important: The goal of this epic is to have all the features in Qt 5.0 before the feature freeze which is rumoured to happen "soon".

Target date: Ideally all of this should be done by the end of January 2012, to be sure not to miss the feature freeze.

Status	Description	Contact
DONE	QStandardPaths	David Faure
DONE	QTemporaryFile (better defaults)	David Faure
DONE	QObject::findChildren(Qt::FindDirectChildrenOnly)	David Faure
DONE	QTemporaryDir	David Faure
DONE	QMimeData: export URLs as plain text too	David Faure
DONE	QCryptographicHash: QIODevice support, to replace KMD5	Sune
DONE	Contact John Layt to get an update on locales/datetime	Mario Fux
DONE	Refcounted quit	Stephen Kelly, change 10408
DONE	QMimeType	David Faure, change 15585
DONE	KUrl/QUrl merge	David Faure and Thiago Macieira (QUrl)
DONE	KDebug features into QDebug	Started by Kai Koehne (Nokia) in change 13433, then Wolfgang Beck implemented category logging (13226), and an addon for the API (see QTBUG-19536). Missing API in Qt itself -> 5.1
DONE	Native event filtering in QCoreApplication	David Faure, change 29260
DONE	QSignalSpy::wait (replaces kWaitForSignal)	David Faure, change 30799
IN PROGRESS	Improved locales	John Layt (see development list)
IN PROGRESS	Improved date/time	John Layt
TO DO	Implement QDesktopServices::openUrl on x11 again, including mailto (QXcbIntegration::services())	?	<{{{3}}}>
IN PROGRESS	KAction/QAction merge	Valentin Rusu
TO DO	KSsl/QSsl merge	Richard Moore	<{{{3}}}>
TO DO	QPA theme plugin for setting KDE palette, font, widget style, etc. (in KDE, but probably needs extensions in Qt)	?	<{{{3}}}>

Once a class is ready to be merged into Qt, it can also be added to KDE frameworks in libinqt5/src. When we port KDE frameworks to Qt 5, we will get rid of libinqt5 and we'll use qt master directly.

If the addition to Qt is a new method rather than a new class, then an intermediate solution has to be found (e.g. QDir::removeRecursive is temporarily QTemporaryDir::removeRecursive in libinqt5, so that we know we use a Qt method for this, and we can easily port to the real Qt5 method when the time comes).