GF shell, show_operations: also show the types of linearization functions

This is a simple change in GF.Grammar.Lookup.allOpers, which is used only in
the implementation of the show_operations command in the shell.

This is useful when importing a concrete syntax (like LexiconEng) as a resource.
However, the types don't always look as nice as I hoped...

src/compiler/GF/Grammar/Lookup.hs

@@ -200,10 +200,11 @@ allOpers gr =
   ] 
  where
   typesIn info = case info of
-    AbsFun  (Just ltyp) _ _ _ -> [ltyp] 
-    ResOper (Just ltyp) _     -> [ltyp] 
+    AbsFun  (Just ltyp) _ _ _ -> [ltyp]
+    ResOper (Just ltyp) _     -> [ltyp]
     ResValue ltyp             -> [ltyp]
     ResOverload _ tytrs       -> [ltyp | (ltyp,_) <- tytrs]
+    CncFun  (Just (i,ctx,typ)) _ _ _ -> [L NoLoc (mkProdSimple ctx typ)]
     _                         -> []
   reachable = case greatestResource gr of
     Just r -> allExtendSpecs gr r