fixing 408085 - redirect from https becomes http

Even though relative redirects are illegal, they are common
urllib treated every relative redirect as though it was to http,
even if the original was https://
As long as we're compensating for server bugs, might as well do
it properly.

Lib/urllib.py

@@ -556,7 +556,7 @@ class FancyURLopener(URLopener):
         void = fp.read()
         fp.close()
         # In case the server sent a relative URL, join with original:
-        newurl = basejoin("http:" + url, newurl)
+        newurl = basejoin(self.type + ":" + url, newurl)
         if data is None:
             return self.open(newurl)
         else: