add mutex and thread abstraction to common files

generic-pc/thread_abstraction.h

@@ -1,25 +0,0 @@
-#ifndef _THREAD_ABSTRACTION_H
-#define _THREAD_ABSTRACTION_H
-
-#include <pthread.h>
-
-class Thread
-{
-	bool mIsRunning;
-	pthread_t mThread;
-
-	static void* runThread(void*);
-	Thread(const Thread&);
-	const Thread& operator=(const Thread&);
-
-	public:
-		Thread();
-		~Thread();
-		void startThread();
-		void joinThread();
-
-	protected:
-		virtual void run() = 0;
-};
-
-#endif