Reset the RELEASE_TAG to None (unreleased) now that the 0.0a20081123 release tag has been created. Add some release instructions to the soc/release.py __doc__ string. Patch by: Todd Larsen

# Geo-enabled Sitemap classes.
from django.contrib.gis.sitemaps.georss import GeoRSSSitemap
from django.contrib.gis.sitemaps.kml import KMLSitemap, KMZSitemap