peace grammars patched to work with the new API

examples/peacekeeping/finnish/PeaceSyntax_Fin.gf

@@ -1,5 +1,5 @@
 --# -path=.:present:prelude
 
 concrete PeaceSyntax_Fin of PeaceSyntax = PeaceCat_Fin ** PeaceSyntaxI with
-  (Lang = LangFin) ;
+  (Lang = LangFin), (Constructors = ConstructorsFin) ;