change tabularLinearize in the Haskell binding to return a list instead of map this preserves the order

doc/runtime-api.html

@@ -363,7 +363,7 @@ then the right method to use is <tt>tabularLinearize</tt>:
 </pre>
 <pre class="haskell">
 Prelude PGF2> tabularLinearize eng e
-fromList [("s Pl Gen","red theatres'"),("s Pl Nom","red theatres"),("s Sg Gen","red theatre's"),("s Sg Nom","red theatre")]
+[("s Sg Nom","red theatre"),("s Sg Gen","red theatre's"),("s Pl Nom","red theatres"),("s Pl Gen","red theatres'")]
 </pre>
 <pre class="java">
 for (Map.Entry&lt;String,String&gt; entry : eng.tabularLinearize(e).entrySet()) {

src/runtime/haskell-bind/PGF2.hsc

@@ -648,7 +648,7 @@ linearizeAll lang e = unsafePerformIO $
                 throwIO (PGFError "The abstract tree cannot be linearized")
 
 -- | Generates a table of linearizations for an expression
-tabularLinearize :: Concr -> Expr -> Map.Map String String
+tabularLinearize :: Concr -> Expr -> [(String, String)]
 tabularLinearize lang e = unsafePerformIO $
   withGuPool $ \tmpPl -> do
     exn <- gu_new_exn tmpPl
@@ -660,7 +660,7 @@ tabularLinearize lang e = unsafePerformIO $
                                            peek ptr
               if ctree == nullPtr
                 then do touchExpr e
-                        return Map.empty
+                        return []
                 else do labels <- alloca $ \p_n_lins ->
                                   alloca $ \p_labels -> do
                                     pgf_lzr_get_table (concr lang) ctree p_n_lins p_labels
@@ -670,7 +670,7 @@ tabularLinearize lang e = unsafePerformIO $
                                     labels <- mapM peekCString labels
                                     return labels
                         lins <- collect lang ctree 0 labels exn tmpPl
-                        return (Map.fromList lins)
+                        return lins
   where
     collect lang ctree lin_idx []             exn tmpPl = return []
     collect lang ctree lin_idx (label:labels) exn tmpPl = do