Changed alot of things.

node_modules/request/lib/querystring.js

@@ -0,0 +1,50 @@
+'use strict'
+
+var qs = require('qs')
+var querystring = require('querystring')
+
+function Querystring (request) {
+  this.request = request
+  this.lib = null
+  this.useQuerystring = null
+  this.parseOptions = null
+  this.stringifyOptions = null
+}
+
+Querystring.prototype.init = function (options) {
+  if (this.lib) { return }
+
+  this.useQuerystring = options.useQuerystring
+  this.lib = (this.useQuerystring ? querystring : qs)
+
+  this.parseOptions = options.qsParseOptions || {}
+  this.stringifyOptions = options.qsStringifyOptions || {}
+}
+
+Querystring.prototype.stringify = function (obj) {
+  return (this.useQuerystring)
+    ? this.rfc3986(this.lib.stringify(obj,
+      this.stringifyOptions.sep || null,
+      this.stringifyOptions.eq || null,
+      this.stringifyOptions))
+    : this.lib.stringify(obj, this.stringifyOptions)
+}
+
+Querystring.prototype.parse = function (str) {
+  return (this.useQuerystring)
+    ? this.lib.parse(str,
+      this.parseOptions.sep || null,
+      this.parseOptions.eq || null,
+      this.parseOptions)
+    : this.lib.parse(str, this.parseOptions)
+}
+
+Querystring.prototype.rfc3986 = function (str) {
+  return str.replace(/[!'()*]/g, function (c) {
+    return '%' + c.charCodeAt(0).toString(16).toUpperCase()
+  })
+}
+
+Querystring.prototype.unescape = querystring.unescape
+
+exports.Querystring = Querystring