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/MOTION.cpp

@@ -0,0 +1,78 @@
+#include "munga.h"
+#pragma hdrstop
+
+#include "motion.h"
+
+const Motion Motion::Identity(Vector3D::Identity, Vector3D::Identity);
+
+#if defined(USE_SIGNATURE)
+	int Is_Signature_Bad(const volatile Motion *)
+	{
+		return False;
+	}
+#endif
+
+Motion::Motion(const Motion& motion)
+{
+	Check_Pointer(this);
+	Check(&motion);
+
+	angularMotion = motion.angularMotion;
+	linearMotion = motion.linearMotion;
+}
+
+//
+//###########################################################################
+//###########################################################################
+//
+Motion& Motion::operator=(const Motion &motion)
+{
+	Check_Pointer(this);
+	Check(&motion);
+
+	angularMotion = motion.angularMotion;
+	linearMotion = motion.linearMotion;
+	return *this;
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+Logical Motion::operator==(const Motion &motion) const
+{
+	Check(this);
+	return (memcmp(this, &motion, sizeof(Motion)) == 0);
+}
+
+//
+//###########################################################################
+//###########################################################################
+//
+Motion& Motion::AddScaled(const Motion& source, const Motion& delta, Scalar t)
+{
+	Check_Pointer(this);
+	Check(&source);
+	Check(&delta);
+	Verify(t >= 0.0f);
+
+	linearMotion.AddScaled(source.linearMotion, delta.linearMotion, t);
+	angularMotion.AddScaled(source.angularMotion, delta.angularMotion, t);
+	return *this;
+}
+
+//
+//###########################################################################
+//###########################################################################
+//
+std::ostream& operator<<(std::ostream& stream, const Motion& p)
+{
+	return stream << '{' << p.linearMotion << ',' << p.angularMotion << '}';
+}
+
+//
+//###########################################################################
+//###########################################################################
+//
+Logical Motion::TestInstance() const
+{
+	return angularMotion.TestInstance();
+}