https: make https.get() accept a URL

https.get() now accepts either a URL (as a string) or an options object.

Refs #2859.
Fixes #3882.

lib/https.js

@@ -21,6 +21,7 @@
 
 var tls = require('tls');
 var http = require('http');
+var url = require('url');
 var inherits = require('util').inherits;
 
 function Server(opts, requestListener) {
@@ -88,6 +89,10 @@ exports.globalAgent = globalAgent;
 exports.Agent = Agent;
 
 exports.request = function(options, cb) {
+  if (typeof options === 'string') {
+    options = url.parse(options);
+  }
+
   if (options.protocol && options.protocol !== 'https:') {
     throw new Error('Protocol:' + options.protocol + ' not supported.');
   }