Initial support for gambit-scheme v4.7.0

ports/gambc_ppapi/gambc.js

 /*
  * Copyright (c) 2013 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-NaClTerm.prefix = 'lua'
-NaClTerm.nmf = 'lua.nmf'
+NaClTerm.prefix = 'gambc'
+NaClTerm.nmf = 'gambc.nmf'
 
 function log(message) {
   document.getElementById('log').textContent = message;
 }
 
 function fsErrorHandler(error) {
   log("Filesystem error: "+ error);
 }
 
 function uploadFile(file) {
@@ skipping 34 matching lines @@
       NaClTerm.init();
     }
   );
 }
 
 window.onload = function() {
   lib.init(function() {
     onInit();
   });
 };