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>

.gitattributes

@@ -0,0 +1,30 @@
+# Normalize line endings; let Git auto-detect text vs binary
+* text=auto
+
+# Win32 C/C++ source — keep CRLF in the working tree on checkout
+*.c    text eol=crlf
+*.cpp  text eol=crlf
+*.C    text eol=crlf
+*.CPP  text eol=crlf
+*.h    text eol=crlf
+*.H    text eol=crlf
+*.hpp  text eol=crlf
+*.HPP  text eol=crlf
+*.inc  text eol=crlf
+*.INC  text eol=crlf
+*.asm  text eol=crlf
+*.def  text eol=crlf
+*.DEF  text eol=crlf
+*.sln       text eol=crlf
+*.vcproj    text eol=crlf
+*.vdproj    text eol=crlf
+*.ini       text eol=crlf
+*.INI       text eol=crlf
+
+# Binary assets — never normalize
+*.lib  binary
+*.res  binary
+*.RES  binary
+*.egg  binary
+*.EGG  binary
+*.rtf  binary