as a template for future Extend modules, added Dut and Spa

src/dutch/ExtendDut.gf

@@ -0,0 +1,16 @@
+--# -path=alltenses:../common:../abstract
+
+concrete ExtendDut of Extend =
+  CatDut ** ExtendFunctor
+--   - []                   -- put the names of your own definitions here
+  with
+    (Grammar = GrammarDut) **
+  open
+    GrammarDut,
+    ResDut,
+    Coordination,
+    Prelude,
+    ParadigmsDut in {
+    -- put your own definitions here
+    
+    }