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/TRACSTUB.cpp

@@ -0,0 +1,22 @@
+#include "munga.h"
+#pragma hdrstop
+
+void* Get_Caller(int)
+{
+	return NULL;
+}
+
+#if defined(USE_ACTIVE_PROFILE)
+	void BitTrace::SetLineImplementation(Byte)
+	{
+	}
+
+	void BitTrace::ClearLineImplementation(Byte)
+	{
+	}
+
+	Logical BitTrace::IsLineValidImplementation(Byte)
+	{
+		return True;
+	}
+#endif