bitbake: HG Fetch with username and password in url

Following up a previous patch for mercurial fetcher, I just fixed a
problem when calling update on a repository with subrepositories enabled.

Attached a patch that fixes this problem

>From caae519a2bd64bf7c729bb26aff344827def47fb Mon Sep 17 00:00:00 2001
From: Volker Vogelhuber <v.vogelhuber@digitalendoscopy.de>
Date: Tue, 29 Apr 2014 15:29:47 +0200
Subject: [PATCH] bitbake: - fixed authentication issues in case of using sub
 repositories

(Bitbake rev: dfa041c940caad12da50126a559afc8de089eeda)

Signed-off-by: Volker Vogelhuber <v.vogelhuber@digitalendoscopy.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/fetch2/hg.py

@@ -120,7 +120,7 @@ class Hg(FetchMethod):
             else:
                 cmd = "%s pull" % (basecmd)
         elif command == "update":
-            cmd = "%s update -C %s" % (basecmd, " ".join(options))
+            cmd = "%s update --config auth.default.prefix=* --config auth.default.username=%s --config auth.default.password=%s --config \"auth.default.schemes=%s\" -C %s" % (basecmd, ud.user, ud.pswd, proto, " ".join(options))
         else:
             raise FetchError("Invalid hg command %s" % command, ud.url)