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>

RP/RPMSSN.cpp

@@ -0,0 +1,28 @@
+#include "rp.h"
+#pragma hdrstop
+
+#include "rpmssn.h"
+
+//##########################################################################
+//###########################    Mission    ################################
+//##########################################################################
+
+RPMission::RPMission(NotationFile *notation_file, ResourceFile *resource_file) : Mission(notation_file, resource_file)
+{
+	Check(notation_file);
+	Check(resource_file);
+
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+RPMission::~RPMission()
+{
+
+}
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+void RPMission::SetPlayerData(NotationFile*)
+{
+	Fail("RPMission::SetPlayerData shouldn't be reached\n");
+}