add thread for determining free hdd (recording dir) space, enable hdd usage icons on vfd (untested)

Conflicts:
	data/locale/deutsch.locale
	data/locale/english.locale
	src/driver/simple_display.cpp
	src/gui/hdd_menu.cpp
	src/gui/infoviewer_bb.cpp
	src/gui/infoviewer_bb.h
	src/gui/moviebrowser.cpp
	src/gui/record_setup.cpp
	src/neutrino.cpp
	src/system/ytcache.h

src/system/hddstat.h

@@ -0,0 +1,55 @@
+/*
+	Neutrino-HD
+
+	License: GPL
+
+	(C) 2013 martii
+
+	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.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the Free Software
+	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef __SYSTEM_HDDSTAT__H_
+#define __SYSTEM_HDDSTAT__H_
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string>
+#include <pthread.h>
+#include <semaphore.h>
+
+class cHddStat
+{
+	private:
+		pthread_t thr;
+		std::string dir;
+		static void* Run(void *);
+		cHddStat();
+	public:
+		unsigned int period;
+		bool running;
+		bool once;
+		int percent;
+
+		sem_t sem;
+		pthread_mutex_t mutex;
+		~cHddStat(void);
+		static cHddStat *getInstance(void);
+		void setDir(std::string &_dir);
+		void setPeriod(unsigned int _period) { period = _period; }
+		int getPercent(void) { return percent; }
+		void statOnce(void);
+};
+#endif