started Croatian, some noun declensions in place

src/croatian/SymbolHrv.gf

@@ -0,0 +1,11 @@
+--# -path=.:../abstract:../common:../prelude
+
+concrete SymbolHrv of Symbol = CatHrv ** open Prelude, ResHrv in {
+
+lincat
+  Symb = {s : Str} ;
+lin
+  MkSymb s = s ;
+  SymbPN s = lin PN {s = \\_ => s.s ; g = Neutr} ;
+
+}