Copied additional items from deprecation timeline to 1.9 release notes.

* ``AppCommand.handle_app()`` is no longer be supported.

* ``RequestSite`` is located in ``django.contrib.sites.requests`` and

  ``get_current_site`` in ``django.contrib.sites.shortcuts``.

* ``RequestSite`` and ``get_current_site()`` are no longer importable from

  ``django.contrib.sites.models``.

* FastCGI support via the ``runfcgi`` management command is removed.

* ``ModelAdmin.declared_fieldsets`` is removed.

* Instances of ``util.py`` in the Django codebase have been renamed to

  ``utils.py`` in an effort to unify all util and utils references.

  The modules that provided backwards compatibility are removed:

* The ``util`` modules that provided backwards compatibility are removed:

  * ``django.contrib.admin.util``

  * ``django.contrib.gis.db.backends.util``

* The ``use_natural_keys`` argument for ``serializers.serialize()`` is removed.

* ``django.forms.get_declared_fields`` is removed.

* Private API ``django.forms.forms.get_declared_fields()`` is removed.

* The ability to use a ``SplitDateTimeWidget`` with ``DateTimeField`` is

  removed.

* ``BaseCommand.requires_model_validation`` is removed in favor of

  ``requires_system_checks``. Admin validators is replaced by admin checks.

* ``ModelAdmin.validator`` is removed in favor of the new ``checks``

  attribute.

* The ``ModelAdmin.validator_class`` and ``default_validator_class`` attributes

  are removed.

* ``ModelAdmin.validate()`` is removed.

* ``django.db.backends.DatabaseValidation.validate_field`` is removed in

  favor of the ``check_field`` method.

* ``django.contrib.sitemaps.FlatPageSitemap`` is removed in favor of

  ``django.contrib.flatpages.sitemaps.FlatPageSitemap``.

* Private API ``django.test.utils.TestTemplateLoader`` is removed.

* The ``django.contrib.contenttypes.generic`` module is removed.