added tests as prepared by oliver

test/ref/yaccdbg.c

@@ -0,0 +1,19 @@
+/*
+  !!DESCRIPTION!! verbose/debug version of yacc.c (if one fails and the other does not you most likely have a stack related problem)
+  !!ORIGIN!!      LCC 4.1 Testsuite
+  !!LICENCE!!     own, freely distributeable for non-profit. read CPYRIGHT.LCC
+*/
+
+/*#define STANDALONE*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+#define INFILE   "yaccdbg.in"
+
+#define LEXDEBUG
+#define YYDEBUG
+
+#define YACCDBG
+#include "yacc.c"