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/SRTSKT.cpp

@@ -0,0 +1,44 @@
+#include "munga.h"
+#pragma hdrstop
+
+#include "srtskt.h"
+
+SortedSocket::SortedSocket(Node *node, Logical has_unique_entries) : SafeSocket(node)
+{
+	hasUniqueEntries = has_unique_entries;
+}
+
+SortedSocket::~SortedSocket()
+{
+}
+
+void SortedSocket::AddValueImplementation(Plug*, const void*)
+{
+	Fail("SortedSocket::AddValueImplementation - Should never reach here");
+}
+
+Plug* SortedSocket::FindImplementation(const void*)
+{
+	Fail("SortedSocket::FindImplementation - Should never reach here");
+	return NULL;
+}
+
+SortedIterator::SortedIterator(SortedSocket *sortedSocket) : SafeIterator(sortedSocket)
+{
+}
+
+SortedIterator::~SortedIterator()
+{
+}
+
+Plug* SortedIterator::FindImplementation(const void*)
+{
+	Fail("SortedIterator::FindImplementation - Should never reach here");
+	return NULL;
+}
+
+void* SortedIterator::GetValueImplementation()
+{
+	Fail("SortedIterator::GetValueImplementation - Should never reach here");
+	return NULL;
+}