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_L4/WTPresets.cpp

@@ -0,0 +1,47 @@
+#include "L4AUDLVL.h"
+
+bool PRESET_isImplemented(int bank, int presetn)
+{
+	PRESETINFO preset = allPresets[bank-1][presetn];
+
+	if (preset.sampleNum <= 0 || preset.sampleNum >= 5)
+	{
+		return false;
+	}
+
+	for (int i=0; i < preset.sampleNum; i++)
+	{
+		if (preset.samples[i].implemented)
+		{
+			return true;
+		}
+	}
+
+	return false;
+}
+
+int PRESET_getNumSamples(int bank, int preset)
+{
+	return allPresets[bank-1][preset].sampleNum;
+}
+
+SAMPLEINFO PRESET_getSampleInfo(int bank, int preset, int sampleInd)
+{
+	SAMPLEINFO default;
+	default.chan = SampleChannel::CHANNEL_CENTER;
+	default.file = "";
+	default.implemented = false;
+	default.loop = SampleLoop::LoopAtWill;
+
+	if (sampleInd < 0 || sampleInd >= allPresets[bank-1][preset].sampleNum)
+	{
+		return default;
+	}
+
+	return allPresets[bank-1][preset].samples[sampleInd];
+}
+
+void PRESET_setBufferIndex(int bank, int preset, int sampleInd, int index)
+{
+	allPresets[bank-1][preset].samples[sampleInd].bufferIndex = index;
+}