started Croatian, some noun declensions in place

src/croatian/TenseHrv.gf

@@ -0,0 +1,20 @@
+concrete TenseHrv of Tense =
+    CatHrv **
+  open
+    ResHrv,
+    Prelude
+  in {
+lin
+  PNeg = {
+    s = "ne" ++ Predef.BIND ;
+    p = False
+    } ;
+  PPos = {
+    s = [] ;
+    p = True
+    } ;
+  ASimul = {s = [] ; t = CTPres} ;
+  TPres  = {s = [] ; t = CTPres} ;
+  TTAnt  t a = {s = t.s ++ a.s ; t = t.t} ; ----
+
+}