add contrib directory & contents

contrib/interface-demo2/intl.h

@@ -0,0 +1,12 @@
+/* Dummy header for libintl.h */
+
+#if I18N
+#include <locale.h>
+#undef __OPTIMIZE__
+#include <libintl.h>
+#define _(String) gettext((String))
+#define N_(String) (String)
+#else
+#define _(String) (String)
+#define N_(String) (String)
+#endif