Import from latest QtMobility.

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diff --git a/src/contacts/qcontactfilter_p.h b/src/contacts/qcontactfilter_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QCONTACTFILTER_P_H
+#define QCONTACTFILTER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qcontactfilter.h"
+#include <QSharedData>
+#include <QDataStream>
+
+#ifndef QT_NO_DEBUG_STREAM
+#include <QDebug>
+#endif
+
+/* Boiler plate code */
+#define Q_IMPLEMENT_CONTACTFILTER_PRIVATE(Class) \
+    Class##Private* Class::d_func() { return reinterpret_cast<Class##Private *>(d_ptr.data()); } \
+    const Class##Private* Class::d_func() const { return reinterpret_cast<const Class##Private *>(d_ptr.constData()); } \
+    Class::Class(const QContactFilter& other) : QContactFilter() { Class##Private::copyIfPossible(d_ptr, other); }
+
+#define Q_IMPLEMENT_CONTACTFILTER_VIRTUALCTORS(Class, Type) \
+    QContactFilterPrivate* clone() const { return new Class##Private(*this); } \
+    virtual QContactFilter::FilterType type() const {return Type;} \
+    static void copyIfPossible(QSharedDataPointer<QContactFilterPrivate>& d_ptr, const QContactFilter& other) \
+    { \
+        if (other.type() == Type) \
+            d_ptr = extract_d(other); \
+        else \
+            d_ptr = new Class##Private; \
+    }
+
+QTPIM_BEGIN_NAMESPACE
+class QContactFilterPrivate : public QSharedData
+{
+public:
+    QContactFilterPrivate()
+    {
+    }
+
+    virtual ~QContactFilterPrivate()
+    {
+    }
+
+    virtual bool compare(const QContactFilterPrivate* other) const = 0;
+    virtual QDataStream& outputToStream(QDataStream& stream, quint8 formatVersion) const = 0;
+    virtual QDataStream& inputFromStream(QDataStream& stream, quint8 formatVersion) = 0;
+#ifndef QT_NO_DEBUG_STREAM
+    // NOTE: on platforms where Qt is built without debug streams enabled, vtable will differ!
+    virtual QDebug& debugStreamOut(QDebug& dbg) const = 0;
+#endif
+    virtual QContactFilterPrivate* clone() const = 0;
+    virtual QContactFilter::FilterType type() const = 0;
+
+    /* Helper functions for C++ protection rules */
+    static const QSharedDataPointer<QContactFilterPrivate>& extract_d(const QContactFilter& other) {return other.d_ptr;}
+};
+QTPIM_END_NAMESPACE
+
+QT_BEGIN_NAMESPACE
+#if defined(Q_CC_MWERKS)
+// This results in multiple symbol definition errors on all other compilers
+// but not having a definition here results in an attempt to use the unspecialized
+// clone (which fails because of the pure virtuals above)
+template<> QTPIM_PREPEND_NAMESPACE(QContactFilterPrivate) *QSharedDataPointer<QTPIM_PREPEND_NAMESPACE(QContactFilterPrivate)>::clone()
+{
+    return d->clone();
+}
+#else
+template<> QTPIM_PREPEND_NAMESPACE(QContactFilterPrivate) *QSharedDataPointer<QTPIM_PREPEND_NAMESPACE(QContactFilterPrivate)>::clone();
+#endif
+QT_END_NAMESPACE
+
+
+#endif