(Hun) Fresh copypaste from generic dummy template. Compiles, isn't good.

src/hungarian/ExtendHun.gf

@@ -0,0 +1,8 @@
+--# -path=.:../common:../abstract
+
+concrete ExtendHun of Extend = CatHun
+  -- ** ExtendFunctor - []
+  -- with (Grammar=GrammarHun)
+  ** open Prelude, ResHun, NounHun in {
+
+} ;