again, re-add some windows stuff Revert "possibly controversial commit: remove all windows sources, keeping only the windows cmake so that we can generate an sln to edit the code"

This reverts commit 48ba7961eb.

engine/shared/library/sharedSynchronization/src/win32/RecursiveMutex.cpp

@@ -0,0 +1,53 @@
+// ======================================================================
+//
+// RecursiveMutex.cpp
+//
+// Copyright 2001-2002 Sony Online Entertainment
+// All Rights Reserved
+//
+// ======================================================================
+
+#include "sharedSynchronization/FirstSharedSynchronization.h"
+#include "sharedSynchronization/RecursiveMutex.h"
+
+// ======================================================================
+
+void RecursiveMutex::install()
+{
+}
+
+// ----------------------------------------------------------------------
+
+void RecursiveMutex::remove()
+{
+}
+
+// ======================================================================
+
+RecursiveMutex::RecursiveMutex()
+{
+	InitializeCriticalSection(&m_criticalSection);
+}
+
+// ----------------------------------------------------------------------
+
+RecursiveMutex::~RecursiveMutex()
+{
+	DeleteCriticalSection(&m_criticalSection);
+}
+
+// ----------------------------------------------------------------------
+
+void RecursiveMutex::enter()
+{
+	EnterCriticalSection(&m_criticalSection);
+}
+
+// ----------------------------------------------------------------------
+
+void RecursiveMutex::leave()
+{
+	LeaveCriticalSection(&m_criticalSection);
+}
+
+// ======================================================================