DolphinQt: initial commit.

This adds the beginning of the DolphinQt user interface. It doesn't
do anything useful yet and only builds via CMake.

Source/Core/DolphinQt/MainWindow.h

@@ -0,0 +1,32 @@
+// Copyright 2014 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <QMainWindow>
+
+// Predefinitions
+namespace Ui {
+class DMainWindow;
+}
+
+class DMainWindow : public QMainWindow
+{
+	Q_OBJECT
+
+public:
+	explicit DMainWindow(QWidget *p = 0);
+	~DMainWindow();
+
+private slots:
+
+	// Help menu
+	void on_actWebsite_triggered();
+	void on_actOnlineDocs_triggered();
+	void on_actGitHub_triggered();
+	void on_actAbout_triggered();
+
+private:
+	Ui::DMainWindow *ui;
+};