some additions to help compile PhrasebookUrd and Pes

src/hindi/AllHin.gf

@@ -1,6 +1,6 @@
 --# -path=.:../abstract:../common:../prelude:../hindustani
 
 concrete AllHin of AllHinAbs =
-  LangHin
---  ExtraHin
+  LangHin,
+  ExtraHin
   ** {} ;

src/hindi/AllHinAbs.gf

@@ -1,4 +1,4 @@
 abstract AllHinAbs =
-  Lang
---  ExtraHinAbs
+  Lang,
+  ExtraHinAbs
   ** {} ;

src/hindi/ExtraHinAbs.gf

@@ -0,0 +1,2 @@
+abstract ExtraHinAbs = {
+}