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/NORMAL.cpp

@@ -0,0 +1,41 @@
+#include "munga.h"
+#pragma hdrstop
+
+#include "normal.h"
+#include "affnmtrx.h"
+
+//
+//#############################################################################
+//#############################################################################
+//
+Normal& Normal::Multiply_Inverse(const Normal &Source, const AffineMatrix &M)
+{
+	Check(this);
+	Check(&Source);
+	Check(&M);
+
+	x = Source.x*M(0,0) + Source.y*M(0,1) + Source.z*M(0,2);
+	y = Source.x*M(1,0) + Source.y*M(1,1) + Source.z*M(1,2);
+	z = Source.x*M(2,0) + Source.y*M(2,1) + Source.z*M(2,2);
+
+	return *this;
+}
+
+//
+//#############################################################################
+//#############################################################################
+//
+Normal& Normal::Multiply(const Normal &Source, const AffineMatrix &M)
+{
+	Check(this);
+	Check(&Source);
+	Check(&M);
+
+	AffineMatrix m;
+	m.Invert(M);
+	return Multiply_Inverse(Source,m);
+}
+
+#if defined(TEST_CLASS)
+#	include "normal.tcp"
+#endif