Fix #527

When language-ecmascript upgraded from 0.15 to 0.16 they added more
validation of what values are valid variables. This adds in protections
to make sure that qualified variables like List.map generate valid
JavaScript.

compiler/Generate/JavaScript.hs

@@ -55,7 +55,7 @@ literal lit =
 expression :: Expr -> State Int (Expression ())
 expression (A region expr) =
     case expr of
-      Var (V.Raw x) -> return $ ref x
+      Var (V.Raw x) -> return $ obj x
       Literal lit -> return $ literal lit
 
       Range lo hi ->
@@ -243,7 +243,11 @@ match region mtch =
           isLiteral p = case p of
                           Case.Clause (Right _) _ _ -> True
                           _ -> False
-          access name = if any isLiteral clauses then ref name else dotSep [name,"ctor"]
+
+          access name
+              | any isLiteral clauses = obj name
+              | otherwise = dotSep (split name ++ ["ctor"])
+
           format isChars e
               | or isChars = InfixExpr () OpAdd e (string "")
               | otherwise = e