Fixed #6470: made the admin use a URL resolver.

This *is* backwards compatible, but `admin.site.root()` has been deprecated. The new style is `('^admin/', include(admin.site.urls))`; users will need to update their code to take advantage of the new customizable admin URLs.

Thanks to Alex Gaynor.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9739 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/admin_views/urls.py

@@ -1,9 +1,11 @@
 from django.conf.urls.defaults import *
 from django.contrib import admin
 import views
+import customadmin
 
 urlpatterns = patterns('',
     (r'^admin/doc/', include('django.contrib.admindocs.urls')),
     (r'^admin/secure-view/$', views.secure_view),
-    (r'^admin/(.*)', admin.site.root),
+    (r'^admin/', include(admin.site.urls)),
+    (r'^admin2/', include(customadmin.site.urls)),
 )