import all functions from lego1 exports

This declares a bunch of classes and functions for us, as well as fixes some declarations that were slightly incorrect (e.g. missing "virtual", etc)

LEGO1/mxpalette.h

@@ -4,6 +4,8 @@
 class MxPalette
 {
 public:
+  __declspec(dllexport) unsigned char operator==(MxPalette &);
+  __declspec(dllexport) void Detach();
 };
 
 #endif // MXPALETTE_H