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/L4HOST.cpp

@@ -0,0 +1,31 @@
+#include "mungal4.h"
+#pragma hdrstop
+
+#include "l4host.h"
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+// Constructor for l4host
+//
+//WinSock support :RB 1/11/07
+L4Host::L4Host(HostID host_ID, HostType host_type, const SOCKADDR_IN *network_address, SOCKET network_socket, const CString &net_name)
+	: Host(host_ID, host_type, network_address), SymbolicName(net_name)
+{
+	NetworkSocket = network_socket;
+	// ConnectStatus = NoNetworkConnectionStatus;
+	pad_head = 0;
+	pad_tail = 0;
+	pad_size = L4HOST_PAD_BUFFER_SIZE;
+	#if defined(TRACE_SEND_BUFFER)
+		sprintf(sendBufferTraceName,"Send Buffer %d",network_address&0xff);
+		sendBufferTrace = new TraceOf<int>(sendBufferTraceName, 0, Trace::IntegerType, TraceSample::IntegerSnapshot);
+		Register_Object(sendBufferTrace);
+		sendBufferTrace->TakeSnapshot(4096);
+	#endif
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+// Destructor for l4host
+//
+L4Host::~L4Host()
+{
+}