remove global_define.h and adjust platform header includes

- Remove unused MRMutex
- Remove unused generate_key

common/mutex.h

@@ -19,14 +19,8 @@
 #pragma once
 
 #include "common/types.h"
-
-#ifdef _WINDOWS
-#include <winsock2.h>
-#include <windows.h>
-#else
-#include "common/unix.h"
-#include <pthread.h>
-#endif
+#include "common/platform/posix/include_pthreads.h"
+#include "common/platform/win/include_windows.h"
 
 class Mutex {
 public:
@@ -38,7 +32,7 @@ public:
 	bool trylock();
 protected:
 private:
-#if defined WIN32 || defined WIN64
+#if defined _WINDOWS
 	CRITICAL_SECTION CSMutex;
 #else
 	pthread_mutex_t CSMutex;
@@ -55,28 +49,3 @@ private:
 	bool	locked;
 	Mutex*	mut;
 };
-
-
-// Somewhat untested...
-// Multi-read, single write mutex -Quagmire
-class MRMutex {
-public:
-	MRMutex();
-	~MRMutex();
-
-	void	ReadLock();
-	bool	TryReadLock();
-	void	UnReadLock();
-
-	void	WriteLock();
-	bool	TryWriteLock();
-	void	UnWriteLock();
-
-	int32	ReadLockCount();
-	int32	WriteLockCount();
-private:
-	int32	rl;	// read locks in effect
-	int32	wr;	// write lock requests pending
-	int32	wl;	// write locks in effect (should never be more than 1)
-	Mutex	MCounters;
-};