Meta task for the remaining larger changes in Qt 5

Tasks ordered by domain:

Qt 5.0 Beta 2 release specific
QTBUG-27319 Qt 5.0 Beta 2 tasks

Qt 5.0 Beta 1 release specific
QTBUG-26922 Qt 5.0 Beta 1 tasks

Platform specific tasks
QTBUG-24128 Qt 5.0 tasks for Windows
QTBUG-24129 Qt 5.0 tasks for OSX
QTBUG-24130 Qt 5.0 tasks for Linux

General cleanups
QTBUG-23524 Grep the source for Qt5 todo items
QTBUG-21342 Remove all stale platform code
QTBUG-21417 Go through all ### Qt 5 / Fix in Qt 5 comments in the source tree
QTBUG-23999 Qt should build with QT_DEPRECATED_SINCE(5, 0) defined
QTBUG-24027 References to QWS in configure should be removed
QTBUG-23273 Stop using the name "Trolltech" in Q_DECLARE_INTERFACE calls

Reviewing
QTBUG-23996 Review and "soft-freeze" all new APIs

Packaging and release
QTBUG-23655 Prepare packaging of Qt5 alpha

QtCore
QTBUG-20886 Remove QSettings from QtCore
QTBUG-23489 Implement the new regular expression classes using PCRE
QTBUG-22622 Cannot put a QObject* into a shared pointer after putting it into a qobject-tracking qweakpointer or a QPointer
QTBUG-23540 Qt plugin system needs some reworking
QTBUG-23589 Merge QArrayData feature [containers branch] to master
QTBUG-23634 Fix QMap implementation
QTBUG-24154 Store type information for methods in the meta-object
QTBUG-25541 QObject::connectNotify() and disconnectNotify() should take a QMetaMethod as argument

QtGui
QTBUG-23758 Decide whether qreal should be double on all platforms.

QtNetwork
QTBUG-23469 Replace QUrl with new implementation

QtDeclarative
QTBUG-23737 Move QtQuick 1 to its own module
QTBUG-23891 API change for future compatibility: Non map tile based rendering

QtMultimedia
QTBUG-24087 Integrate stalled QtMultimedia patches

QtWebKit
QTBUG-24857 Separate Qt WebKit into Qt WebKit and Qt WebKit Widgets