Fixed deprecation warning

django.conf.urls.defaults is now deprecated. Use django.conf.urls instead.
Maintain Django 1.3 compatibility
Removed star imports
Simple: removed conflicting score field from raw result objects

This keeps consistency with the Solr backend, which resolves this conflict
in the same manner.
Merge pull request #742 from bigjust/simple-backend-score-fix

Simple: removed conflicting score field from raw result objects
Solr build_solr_schema: fixed a bug in build_solr_schema. Thanks to mjumbewu for the report!

If you tried to run build_solr_schema with a backend that supports
schema building, but was not Solr (like Whoosh), then you would get an
invalid schema.  This fix raises the ImproperlyConfigured exception
with a proper message.
Merge pull request #743 from bigjust/solr-managementcmd-fix

Solr build_solr_schema: fixed a bug in build_solr_schema. Thanks to mjum...
Merge pull request #698 from gjb83/master

Fixed deprecation warning for url imports on Django 1.3

Thanks to @gjb83 for the patch.