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_L4/RPL4MODE.cpp

@@ -0,0 +1,60 @@
+#include "rpl4.h"
+#pragma hdrstop
+
+#include "rpl4mode.h"
+
+#if defined(DEBUG)
+#	define Test_Tell(n) DEBUG_STREAM << n
+#else
+#	define Test_Tell(n)
+#endif
+
+struct ModeLookup
+{
+	const char *name;
+	ModeMask modeMask;
+};
+
+static ModeLookup mode_lookup[] =
+{
+	{"ModeNonConfig",   RPL4ModeManager::ModeNonConfig},
+	{"ModeConfigReady", RPL4ModeManager::ModeConfigReady},
+	{"ModeConfigOn",    RPL4ModeManager::ModeConfigOn},
+	{"ModePreset1",     RPL4ModeManager::ModePreset1},
+	{"ModePreset2",     RPL4ModeManager::ModePreset2},
+	{"ModePreset3",     RPL4ModeManager::ModePreset3},
+	{"ModePreset4",     RPL4ModeManager::ModePreset4},
+	{"ModePreset5",     RPL4ModeManager::ModePreset5},
+	{"ModePreset6",     RPL4ModeManager::ModePreset6},
+	{"ModeBasic",       RPL4ModeManager::ModeBasic},
+	{"ModeStandard",    RPL4ModeManager::ModeStandard},
+	{"ModeIntercom",    RPL4ModeManager::ModeIntercom},
+	{"ModeConfiguring", RPL4ModeManager::ModeConfiguring},
+	{ NULL, (ModeMask)0}
+};
+
+Logical RPL4ModeManager::ModeStringLookup(const char *name, ModeMask *returned_value)
+{
+	Check(this);
+	Check_Pointer(name); 
+	Check_Pointer(returned_value); 
+	//----------------------------------------
+	// Search table for match
+	//----------------------------------------
+	ModeLookup *lookup;
+
+	for(lookup=mode_lookup; lookup->name!=NULL; ++lookup)
+	{
+		if (stricmp(name, lookup->name) == 0)
+		{
+			*returned_value = lookup->modeMask;
+			Check_Fpu();
+			return True;
+		}
+	}
+	//----------------------------------------
+	// Not found here, check next level down.
+	//----------------------------------------
+	Check_Fpu();
+	return ModeManager::ModeStringLookup(name, returned_value);
+}