Rename Smilebit library to MUSASHI

Strings in the .rdata portion of the Smilebit in-house library code
suggest that this was its name, with its contents having names beginning
with an M (whence MMATRIX, for example).

decompile/Makefile

@@ -41,7 +41,7 @@ src/JSRF/Jet2.exe: $(OBJ) $(LIB)
 src/JSRF/Jet2.obj: src/JSRF/Core.hpp src/XDK/CRT/stddef.h src/XDK/D3D.h\
                    src/XDK/Win32.h
 
-src/JSRF/Core.obj: src/JSRF/Core.hpp src/Smilebit/MMatrix.hpp\
+src/JSRF/Core.obj: src/JSRF/Core.hpp src/MUSASHI/MMatrix.hpp\
                    src/XDK/CRT/stddef.h src/XDK/D3D.h src/XDK/Win32.h
 
 src/JSRF/GameData.obj: src/JSRF/GameData.hpp

decompile/src/JSRF/Core.hpp

@@ -5,7 +5,7 @@ Game and GameObj classes that form the foundation of the JSRF game code.
 #ifndef CORE_HPP
 #define CORE_HPP
 
-#include "../Smilebit/MMatrix.hpp"
+#include "../MUSASHI/MMatrix.hpp"
 #include "../XDK/CRT/stddef.h"
 #include "../XDK/D3D.h"
 #include "../XDK/Win32.h"