[Core] Added POSIX support (Experimental)

Thanks to Danman
I don't think it actually compile although tried my best to correct
code.


Former-commit-id: c3366c2c924f7392f4d46824dafca63ecf7f1fea

src/Nazara/Core/Posix/MutexImpl.hpp

@@ -0,0 +1,28 @@
+// Copyright (C) 2012 Alexandre Janniaux
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_MUTEXIMPL_HPP
+#define NAZARA_MUTEXIMPL_HPP
+
+#include <pthread.h>
+
+class NzMutexImpl
+{
+	friend class NzConditionVariableImpl;
+
+	public:
+		NzMutexImpl();
+		~NzMutexImpl();
+
+		void Lock();
+		bool TryLock();
+		void Unlock();
+
+	private:
+		pthread_mutex_t m_handle;
+};
+
+#endif // NAZARA_MUTEXIMPL_HPP