Move portable things to AerofoilPortable.

AerofoilPortable/GpThreadEvent_Cpp11.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include "IGpThreadEvent.h"
+
+#include <mutex>
+#include <condition_variable>
+
+class GpThreadEvent_Cpp11 final : public IGpThreadEvent
+{
+public:
+	~GpThreadEvent_Cpp11();
+
+	void Wait() override;
+	bool WaitTimed(uint32_t msec) override;
+	void Signal() override;
+	void Destroy() override;
+
+	static GpThreadEvent_Cpp11 *Create(bool autoReset, bool startSignaled);
+
+private:
+	GpThreadEvent_Cpp11(bool autoReset, bool startSignaled);
+	GpThreadEvent_Cpp11() = delete;
+
+	std::mutex m_mutex;
+	std::condition_variable m_cvar;
+	bool m_flag;
+	bool m_autoReset;
+};