added Extend modules for Hindi, Urdu, Mongolian

src/urdu/AllUrd.gf

@@ -2,5 +2,5 @@
 
 concrete AllUrd of AllUrdAbs =
   LangUrd,
-  ExtraUrd
-  ** {} ;
+  ExtendUrd
+  ** open ExtraUrd in {} ;

src/urdu/AllUrdAbs.gf

@@ -1,4 +1,4 @@
 abstract AllUrdAbs =
   Lang,
-  ExtraUrdAbs
+  Extend
   ** {} ;

src/urdu/ExtendUrd.gf

@@ -0,0 +1,11 @@
+--# -path=.:../common:../abstract
+
+concrete ExtendUrd of Extend =
+  CatUrd ** ExtendFunctor -
+  [
+    ComplDirectVQ, ComplDirectVS
+   ]
+  with
+    (Grammar = GrammarUrd) ** {
+
+}