Initial import of Red Planet v4.10 Win32 source

Imports the current Win32 source for the pod-racing game 'Red Planet',
built on the MUNGA engine and its L4 (Win32/DirectX) platform layer:

- MUNGA / MUNGA_L4: cross-platform engine core and Win32 backend
- RP / RP_L4: Red Planet game logic and Win32 application
- DivLoader, Setup1: asset loader and installer project
- lib, MUNGA_L4/openal, MUNGA_L4/sos: third-party audio dependencies

Removed stale Subversion metadata and added .gitignore/.gitattributes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

MUNGA/SCHAIN.h

@@ -0,0 +1,129 @@
+#pragma once
+
+#include "sfeskt.h"
+#include "memblock.h"
+
+#define SCHAINLINK_MEMORYBLOCK_ALLOCATION (100)
+
+class SChainLink : public Link
+{
+	friend class SChain;
+	friend class SChainIterator;
+
+public:
+	~SChainLink();
+	Logical TestInstance() const;
+
+private:
+	SChainLink(SChain *chain, Plug *plug, SChainLink *nextSChainLink, SChainLink *prevSChainLink);
+
+	SChainLink *nextSChainLink;
+	SChainLink *prevSChainLink;
+
+private:
+	static MemoryBlock* GetAllocatedMemory();
+
+	void* operator new(size_t)			{ return GetAllocatedMemory()->New(); }
+	void operator delete(void *where)	{ return GetAllocatedMemory()->Delete(where); }
+};
+
+class SChain : public SafeSocket
+{
+	friend class SChainLink;
+	friend class SChainIterator;
+
+public:
+	SChain(Node *node);
+	~SChain();
+
+	Logical TestInstance() const;
+	static void TestClass();
+	static void ProfileClass();
+
+protected:
+	void AddImplementation(Plug *plug);
+
+private:
+	SChainLink* InsertSChainLink(Plug *plug, SChainLink *link);
+
+	SChainLink *head;
+	SChainLink *tail;
+};
+
+template <class T> class SChainOf : public SChain
+{
+public:
+	SChainOf(Node *node);
+	~SChainOf();
+
+	void Add(T plug)	{ AddImplementation(Cast_Object(Plug*, plug)); }
+};
+
+template <class T> SChainOf<T>::SChainOf(Node *node) : SChain(node)
+{
+}
+
+template <class T> SChainOf<T>::~SChainOf()
+{
+}
+
+class SChainIterator : public SafeIterator
+{
+public:
+	SChainIterator(SChain *chain);
+	SChainIterator(const SChainIterator &iterator);
+	~SChainIterator();
+
+	Logical TestInstance() const;
+
+	void First();
+	void Last();
+	void Next();
+	void Previous();
+	CollectionSize GetSize();
+	void Remove();
+
+protected:
+	void* ReadAndNextImplementation();
+	void* ReadAndPreviousImplementation();
+	void* GetCurrentImplementation();
+	void* GetNthImplementation(CollectionSize index);
+	void InsertImplementation(Plug *plug);
+
+private:
+	void ReceiveMemo(IteratorMemo memo, void *content);
+
+	SChainLink *currentLink;
+};
+
+template <class T> class SChainIteratorOf : public SChainIterator
+{
+public:
+	SChainIteratorOf(SChainOf<T> *chain);
+	SChainIteratorOf(SChainOf<T> &chain);
+	SChainIteratorOf(const SChainIteratorOf<T> &iterator);
+
+	~SChainIteratorOf();
+
+	T ReadAndNext()		{ return (T)ReadAndNextImplementation(); }
+	T ReadAndPrevious()	{ return (T)ReadAndPreviousImplementation(); }
+	T GetCurrent()		{ return (T)GetCurrentImplementation(); }
+	T GetNth(CollectionSize index)	{ return (T)GetNthImplementation(index); }
+	void Insert(T plug)	{ InsertImplementation(Cast_Object(Plug*, plug)); }
+};
+
+template <class T> SChainIteratorOf<T>::SChainIteratorOf(SChainOf<T> *chain) : SChainIterator(chain)
+{
+}
+
+template <class T> SChainIteratorOf<T>::SChainIteratorOf(SChainOf<T> &chain) : SChainIterator(&chain)
+{
+}
+
+template <class T> SChainIteratorOf<T>::SChainIteratorOf(const SChainIteratorOf<T> &iterator) : SChainIterator(iterator)
+{
+}
+
+template <class T> SChainIteratorOf<T>::~SChainIteratorOf()
+{
+}