[soc2009/multidb] Added a note to the documentation about the depreca…

…tion of the DATABASE_* settings.

git-svn-id: http://code.djangoproject.com/svn/django/branches/soc2009/multidb@11426 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/ref/settings.txt

@@ -156,6 +156,13 @@ Django.  It is a nested dictionary who's contents maps aliases to a dictionary
 containing the options for an individual database.  The following inner options
 are used:
 
+.. admonition:: Note
+
+    In versions of Django prior to 1.2 each of the following were individual
+    settings, the usage of those has been deprecated but will be supported
+    until Django 1.4.
+
+
 DATABASE_ENGINE
 ~~~~~~~~~~~~~~~