fixed some bugs:

- switch with BIG difference between lower and upper now handled correctly
- made sure an added error production is never chosen as the default one
- don't allow AUTO as specification for a parameter

lang/cem/cemcom/decspecs.c

@@ -40,7 +40,7 @@ do_decspecs(ds)
 	}
 
 	if (level == L_FORMAL2)	{
-		if (ds->ds_sc_given && ds->ds_sc != AUTO &&
+		if (ds->ds_sc_given &&
 		    ds->ds_sc != REGISTER){
 			extern char *symbol2str();
 			error("%s formal illegal", symbol2str(ds->ds_sc));