make use of qt_headersclean.prf

Change-Id: If4dc7b40b9222113cb11d31409a39272004c38d1
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

tests/auto/headersclean/headersclean.pro

-TARGET = tst_headersclean
-CONFIG += testcase
-SOURCES  += tst_headersclean.cpp
-QT = core xmlpatterns testlib
+QT = xmlpatterns
+load(qt_headersclean)
 DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0

tests/auto/headersclean/tst_headersclean.cpp

-/****************************************************************************
-**
-** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
-** Contact: http://www.qt-project.org/legal
-**
-** This file is part of the test suite of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and Digia.  For licensing terms and
-** conditions see http://qt.digia.com/licensing.  For further information
-** use the contact form at http://qt.digia.com/contact-us.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, 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, Digia gives you certain additional
-** rights.  These rights are described in the Digia 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.
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#define QT_NO_KEYWORDS
-#define signals int
-#define slots int
-#define emit public:;
-#define foreach public:;
-#define forever public:;
-
-#include <QtCore/QtCore>
-#include <QtTest/QtTest>
-
-#include <QtXmlPatterns/QtXmlPatterns>
-
-class tst_HeadersClean: public QObject
-{
-    Q_OBJECT
-public:
-    tst_HeadersClean() {}
-};
-
-QTEST_MAIN(tst_HeadersClean)
-#include "tst_headersclean.moc"