Use "__reifyEntry" instead of just "__reify" for Entry Symbol.

lib/entry.js

@@ -7,7 +7,7 @@ var NAN = {};
 var UNDEFINED = {};
 
 var useSymbol = typeof Symbol === "function";
-var entryStrKey = "__reify";
+var entryStrKey = "__reifyEntry";
 var entrySymKey = useSymbol ? Symbol.for(entryStrKey) : null;
 var entryKey = useSymbol ? entrySymKey : entryStrKey;
 var hasOwn = Object.prototype.hasOwnProperty;