Add in the section on Python 2.3 compatibility.
Add in the section on Python 2.3 compatibility.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@13284 bcc190cf-cafb-0310-a4f2-bffc1f526a37

--HG--
extra : convert_revision : f40ee77a7cf37bdc4aab9e1df388340bbfc2f2b2

adieu/django-nonrel,heracek/django-nonrel,heracek/django-nonrel,heracek/django-nonrel,adieu/django-nonrel,adieu/django-nonrel