remove QtQuick.Dialogs and related modules

They are being moved to the QtQuick Controls repository (see change
ba9ba084124403bd8930e29d8afcea9d64b6c0b6 in qtquickcontrols).
This makes it possible to use QtQuick Controls in the implementation.

[ChangeLog][QtQuick][Dialogs]Moved dialog implementations from
qtdeclarative module to qtquickcontrols module due to dependencies

Change-Id: I76d5b71b185dd14a188ea68f18bfec61b4bf2f41
Reviewed-by: Liang Qi <liang.qi@digia.com>
Add QQuickMatrix4x4, a way to specify a matrix transform in QML.

Add QQuickMatrix4x4 which makes it possible to specify a 4x4
matrix tranformation directly in QML instead of decomposing the
transformation into rotation, scale etc. It does NOT replace anything,
just adds a new way of specifying a tranformation of an Item.

Change-Id: I1b123778d1d458dfe4314cdb4f0fc99fd8a4c86a
Reviewed-by: Alan Alpert <aalpert@blackberry.com>
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>