Import QSaveFile from libkdeqt5staging.

It's planned to become part of Qt 5.1.

tests/TestQSaveFile.h

@@ -0,0 +1,39 @@
+/*
+ *  Copyright (C) 2012 Felix Geyer <debfx@fobos.de>
+ *  Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 2 or (at your option)
+ *  version 3 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef TESTQSAVEFILE_H
+#define TESTQSAVEFILE_H
+
+#include <QtCore/QObject>
+
+class TestQSaveFile : public QObject
+{
+    Q_OBJECT
+
+private Q_SLOTS:
+    void transactionalWrite();
+    void autoFlush();
+    void transactionalWriteNoPermissions();
+    void transactionalWriteCanceled();
+    void transactionalWriteErrorRenaming();
+
+private:
+    QString tmpDir();
+};
+
+#endif // TESTQSAVEFILE_H