implement all DLL exports (as TODOs)

Now we can use our own compiled LEGO1.LIB rather than one generated from the original. Also implements a script that tests them to help ensure future commits don't break them.

LEGO1/mxstreamer.cpp

@@ -6,6 +6,20 @@ MxStreamer::~MxStreamer()
   // TODO
 }
 
+// OFFSET: LEGO1 0x100b92c0 STUB
+MxStreamController *MxStreamer::Open(const char *name, unsigned short p)
+{
+  // TODO
+  return NULL;
+}
+
+// OFFSET: LEGO1 0x100b9570 STUB
+long MxStreamer::Close(const char *p)
+{
+  // TODO
+  return 0;
+}
+
 // OFFSET: LEGO1 0x100b9b60 STUB
 long MxStreamer::Notify(MxParam &p)
 {