remove double 'util' and 'Queue' from requires

ex: require('./lib/util').util;

lib/parser/hiredis.js

@@ -1,7 +1,7 @@
 /*global Buffer require exports console setTimeout */
 
 var events = require("events"),
-    util = require("../util").util,
+    util = require("../util"),
     hiredis = require("hiredis");
 
 exports.debug_mode = false;

lib/parser/javascript.js

@@ -6,7 +6,7 @@
 //    use numbers for parser state
 
 var events = require("events"),
-    util = require("../util").util;
+    util = require("../util");
 
 exports.debug_mode = false;
 exports.name = "javascript";

lib/queue.js

@@ -55,4 +55,7 @@ Object.defineProperty(Queue.prototype, 'length', {
     }
 });
 
-exports.Queue = Queue;
+
+if(typeof module !== 'undefined' && module.exports) {
+  module.exports = Queue;
+}

lib/util.js

@@ -1,7 +1,7 @@
 // Support for very old versions of node.  At some point, we should abandon this.
 var minor = process.versions.node.split('.')[1];
 if (minor > 2) {
-    exports.util = require("util");
+    module.exports = require("util");
 } else {
-    exports.util = require("sys");
+    module.exports = require("sys");
 }