Fix compilation for maiko version 201

Version 201 did not have NEWCDRCODING, so the implementation of
N_OP_rplcons requires definitions from gcdata.h and address.h

src/rplcons.c

@@ -29,6 +29,10 @@
 #include "lspglob.h"
 #include "lsptypes.h"      // for Listp
 #include "rplconsdefs.h"   // for N_OP_rplcons
+#ifndef NEWCDRCODING
+#include "gcdata.h"
+#include "address.h"
+#endif
 
 /***************************************************/