OTHER: rename 'lib' directory to 'backend_xmmsclient++'

I plan to replace the boost based c++ bindings with native Qt based bindings
in the long run
The currently there is libxmms2qt, but tru stated working on bindings based
on genipc

lib/xmmsqt4.h

@@ -1,50 +0,0 @@
-/** 
- *  This file is a part of Esperanza, an XMMS2 Client.
- *
- *  Copyright (C) 2005-2007 XMMS2 Team
- *
- *  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
- *  of the License, or (at your option) any later version.
- *
- *  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.
- */
-
-
-#ifndef __XMMSQT4_H__
-#define __XMMSQT4_H__
-
-#include <xmmsclient/xmmsclient++/mainloop.h>
-
-#include <QApplication>
-#include <QObject>
-#include <QSocketNotifier>
-
-class XmmsQT4 : public QObject, public Xmms::MainloopInterface
-{
-	Q_OBJECT
-	public:
-		XmmsQT4(xmmsc_connection_t *xmmsc);
-		~XmmsQT4();
-
-		void run ();
-
-		void ToggleWrite(bool toggle);
-		xmmsc_connection_t *GetXmmsConnection();
-
-	public slots:
-		void OnRead ();
-		void OnWrite ();
-
-	private:
-		int m_fd;
-		QSocketNotifier *m_rsock;
-		QSocketNotifier *m_wsock;
-		xmmsc_connection_t *m_xmmsc;
-};
-
-#endif