Issue 6675 - Don't use relative path for info module require

lib/prefs.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 272 matching lines @@
 {
   return keyPrefix + pref;
 }
 
 function savePref(pref)
 {
   return browser.storage.local.set({[prefToKey(pref)]: overrides[pref]});
 }
 
 let customSave = new Map();
-if (require("../buildtools/info").platform == "gecko")
+if (require("info").platform == "gecko")
 {
   // Saving one storage value causes all others to be saved as well on Gecko.
   // Make sure that updating ad counter doesn't cause the filters data to be
   // saved frequently as a side-effect.
   const MIN_UPDATE_INTERVAL = 60 * 1000;
   let lastUpdate = -MIN_UPDATE_INTERVAL;
   let promise = null;
   customSave.set("blocked_total", pref =>
   {
     if (!promise)
@@ skipping 78 matching lines @@
           eventEmitter.emit(pref);
         }
       }
     });
   }
 
   Prefs.untilLoaded = Promise.all([localLoaded, managedLoaded]).then(onLoaded);
 }
 
 init();